2016 GMC SIERRA 1500 Power Train Problems

The contact owns a 2016 GMC Sierra 1500. The contact stated while driving at various speeds and depressing the accelerator pedal, the vehicle hesitated while responding, shuddered, and made an abnormal sound. The vehicle was taken to the dealer, where it was diagnosed with torque converter clutch shudder and failure. The dealer determined that the torque converter clutch needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and offered to partially cover the cost of the repair. The failure mileage was approximately 66,456.

The contact owns a 2016 GMC Sierra 1500. The contact stated while driving at various speeds and depressing the accelerator pedal, the vehicle hesitated while responding, shuddered, and made an abnormal sound. The vehicle was taken to the dealer, where it was diagnosed with torque converter clutch shudder and failure. The dealer determined that the torque converter clutch needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and offered to partially cover the cost of the repair. The failure mileage was approximately 66,456.

Truck has 8L90 transmission, has recently started shuddering at speeds from 65-75 and higher, I am experiencing issues with occasional hard shifts from 1st to 2nd gear, and 2 days ago experienced a very hard shift around 30-40mph when it slammed it made the tires chirp. 85k miles.

Truck has 8L90 transmission, has recently started shuddering at speeds from 65-75 and higher, I am experiencing issues with occasional hard shifts from 1st to 2nd gear, and 2 days ago experienced a very hard shift around 30-40mph when it slammed it made the tires chirp. 85k miles.

Vehicle sluggish upon acceleration. Transmission downshifts unexpectedly. Vehicle continues to rev bounce at steady acceleration and when driving at speed without acceleration.

Vehicle sluggish upon acceleration. Transmission downshifts unexpectedly. Vehicle continues to rev bounce at steady acceleration and when driving at speed without acceleration.

6 SPEED AUTO TRANSMISSION ISSUE WITH SHUTTERING AND WILL INTERMITTINGLY SOUNDS LIKE WHEN YOU DRIVE OVER THE GROVES ON THE SIDE OF THE HIGHWAY AND SOMETIMES HARD SHIFFTING BETWEEN LOWER GEARS . IT HAS SAME ISSUE AS BEING ALREADY REPORT WITH GMC TRANSMISSION . I HAVE TAKEN TRUCK TO LOCAL BUICK DEALERSHIP AND HAVE THEM FLUSH FLUIDS AND REPLACE FILTER . ISSUE HAS REACCURRED . TRANS DOES NOT SLIP FORWARD OR REVERS .

6 SPEED AUTO TRANSMISSION ISSUE WITH SHUTTERING AND WILL INTERMITTINGLY SOUNDS LIKE WHEN YOU DRIVE OVER THE GROVES ON THE SIDE OF THE HIGHWAY AND SOMETIMES HARD SHIFFTING BETWEEN LOWER GEARS . IT HAS SAME ISSUE AS BEING ALREADY REPORT WITH GMC TRANSMISSION . I HAVE TAKEN TRUCK TO LOCAL BUICK DEALERSHIP AND HAVE THEM FLUSH FLUIDS AND REPLACE FILTER . ISSUE HAS REACCURRED . TRANS DOES NOT SLIP FORWARD OR REVERS .

My transmission jerks randomly. It's done it since it's been brand new. When it does it, it is usually when it deaccellerates. I don't know if it's dangerous but I was hoping they had a fix for it by now.

My transmission jerks randomly. It's done it since it's been brand new. When it does it, it is usually when it deaccellerates. I don't know if it's dangerous but I was hoping they had a fix for it by now.

Paint bubbling on roof. When turning on key, the radio makes a loud buzzing sound. On 11/16/2024, when leaving a traffic light, the truck began surging and shuddering. Tachometer was revving up and down like the transmission was slipping with loss of power while trying to take off and accelerate. While attempting to return home, loud booming noise was coming in from under floorboard. I was unsure if I would make it home before the transmission totally failed. People were passing around me because I was unable to acceleration fast enough because of the shuddering and loss of power. No previous signs of any powertrain issues or failures before. It happened for the 1st time today, and my truck is no longer safe to drive. GM has known about this transmission issue for years on several different models and has failed to broadly rectify the mechanical problem on all affected vehicles. Instead, GM has allowed the vehicle owners to continue to drive a vehicle with a known problem while it waited for a failure. This put me and my family at risk because I am driving around in a vehicle with a known transmission problem not knowing when it would fail or where I could be located when it failed. GM needs to pay for all repairs on all vehicles with this transmission failure because GM has known about this problem for years before someone gets hurt or killed. GM knew about the shuddering problem from the beginning, and they fixed the problem by tuning the transmission which then caused the total transmission failures over time which vehicles owners are not dealing with. Metal shavings are being located in the pan when inspected. GM should be held responsible for the cost of these transmission repairs. I would have never purchased the GMC Sierra 1500 if I have known GM was installing defective transmissions in new vehicles. That is shady, reckless, and unsafe. GM, pay to fix these problems.

Paint bubbling on roof. When turning on key, the radio makes a loud buzzing sound. On 11/16/2024, when leaving a traffic light, the truck began surging and shuddering. Tachometer was revving up and down like the transmission was slipping with loss of power while trying to take off and accelerate. While attempting to return home, loud booming noise was coming in from under floorboard. I was unsure if I would make it home before the transmission totally failed. People were passing around me because I was unable to acceleration fast enough because of the shuddering and loss of power. No previous signs of any powertrain issues or failures before. It happened for the 1st time today, and my truck is no longer safe to drive. GM has known about this transmission issue for years on several different models and has failed to broadly rectify the mechanical problem on all affected vehicles. Instead, GM has allowed the vehicle owners to continue to drive a vehicle with a known problem while it waited for a failure. This put me and my family at risk because I am driving around in a vehicle with a known transmission problem not knowing when it would fail or where I could be located when it failed. GM needs to pay for all repairs on all vehicles with this transmission failure because GM has known about this problem for years before someone gets hurt or killed. GM knew about the shuddering problem from the beginning, and they fixed the problem by tuning the transmission which then caused the total transmission failures over time which vehicles owners are not dealing with. Metal shavings are being located in the pan when inspected. GM should be held responsible for the cost of these transmission repairs. I would have never purchased the GMC Sierra 1500 if I have known GM was installing defective transmissions in new vehicles. That is shady, reckless, and unsafe. GM, pay to fix these problems.

The contact owns a 2016 GMC Sierra 1500. The contact stated that after starting the vehicle and shifting to drive (D), the vehicle hesitated and then lunged forward while depressing the accelerator pedal. The contact stated that the vehicle also lunged forward while depressing the brake pedal with the transmission downshifting. The contact stated there was no warning light illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the transmission fluid needed to be flushed and refilled. The vehicle was not repaired. The contact stated that the failure was reoccurring. The contact stated that the check engine warning light was recently illuminated. The manufacturer was informed of the failure. The failure mileage was approximately 165,000.

The contact owns a 2016 GMC Sierra 1500. The contact stated that after starting the vehicle and shifting to drive (D), the vehicle hesitated and then lunged forward while depressing the accelerator pedal. The contact stated that the vehicle also lunged forward while depressing the brake pedal with the transmission downshifting. The contact stated there was no warning light illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the transmission fluid needed to be flushed and refilled. The vehicle was not repaired. The contact stated that the failure was reoccurring. The contact stated that the check engine warning light was recently illuminated. The manufacturer was informed of the failure. The failure mileage was approximately 165,000.

Transmission began to shift hard at 55 miles per hour on Highway. Then when I got to a parking lot it began shifting hard and also in reverse.

Transmission began to shift hard at 55 miles per hour on Highway. Then when I got to a parking lot it began shifting hard and also in reverse.

The vehicle has been in the dealership from where it was bought numerous of times for the same problem. Transmission shifts very hard from one to two and Has lots of slippage. Dealer recommended a transmission flush and it did not fix the problem. They would keep telling me that the transmission is normal for slipping and slamming hard while changing gears. I’ve been to multiple shops and nobody seems to know how to give me a correct answer or guide me on how to fix my problem.

The vehicle has been in the dealership from where it was bought numerous of times for the same problem. Transmission shifts very hard from one to two and Has lots of slippage. Dealer recommended a transmission flush and it did not fix the problem. They would keep telling me that the transmission is normal for slipping and slamming hard while changing gears. I’ve been to multiple shops and nobody seems to know how to give me a correct answer or guide me on how to fix my problem.

The contact owns a 2016 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle stopped moving very slowly and came to a complete stop. The check engine warning light was illuminated. The vehicle was towed to a dealer to be diagnosed. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle was previously repaired under warranty twice. The manufacturer was made aware of the failure but confirmed that the vehicle was no longer under warranty. The failure mileage was approximately 130,000.

The contact owns a 2016 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle stopped moving very slowly and came to a complete stop. The check engine warning light was illuminated. The vehicle was towed to a dealer to be diagnosed. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle was previously repaired under warranty twice. The manufacturer was made aware of the failure but confirmed that the vehicle was no longer under warranty. The failure mileage was approximately 130,000.

The contact owns a 2016 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. Additionally, the transmission started shifting improperly. The vehicle was taken to an independent mechanic where it was diagnosed with a failed transmission fluid control sensor. The contact was informed that due to the transmission fluid sensor failure, the torque converter control module needed to be replaced. The contact stated that the vehicle was taken to several different independent mechanics and the diagnosis was confirmed. The vehicle was not repaired. The contact provided the DTC codes: P0711 and P0700. The contact researched and discovered a previous repair coverage with a similar failure description. The coverage program code was N192291660. The manufacturer was made aware of the failure; however, the contact was informed that there were no unrepaired recalls or coverage for the failure. The failure mileage was approximately 86,624.

The contact owns a 2016 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. Additionally, the transmission started shifting improperly. The vehicle was taken to an independent mechanic where it was diagnosed with a failed transmission fluid control sensor. The contact was informed that due to the transmission fluid sensor failure, the torque converter control module needed to be replaced. The contact stated that the vehicle was taken to several different independent mechanics and the diagnosis was confirmed. The vehicle was not repaired. The contact provided the DTC codes: P0711 and P0700. The contact researched and discovered a previous repair coverage with a similar failure description. The coverage program code was N192291660. The manufacturer was made aware of the failure; however, the contact was informed that there were no unrepaired recalls or coverage for the failure. The failure mileage was approximately 86,624.

My truck only has 40,000 miles on it and has the 8 speed 8L90 transmission. The truck bucks hard and has majorly delayed acceleration, especially on the initial startup of the vehicle. At this point the torque converter is going bad as well as the transmission fluid temperature sensor as per my mechanic when hooked up to the computer. It is now causing a fluttering of the RPMs, especially when the vehicle heats up after running for several minutes. It is severely impacting my fuel economy as well as my general safety when operation my truck. This is a known problem with this type of transmission but so far there has been no recall issued, only a class action lawsuit that I am having a hard time joining. It is going to cost me over $8000 for a new transmission and I don't really know where to turn at this point or what to do! Please make GM issue a recall for this known transmission problem that they put in millions of vehicles, all having similar problems as my own! Thank you!

My truck only has 40,000 miles on it and has the 8 speed 8L90 transmission. The truck bucks hard and has majorly delayed acceleration, especially on the initial startup of the vehicle. At this point the torque converter is going bad as well as the transmission fluid temperature sensor as per my mechanic when hooked up to the computer. It is now causing a fluttering of the RPMs, especially when the vehicle heats up after running for several minutes. It is severely impacting my fuel economy as well as my general safety when operation my truck. This is a known problem with this type of transmission but so far there has been no recall issued, only a class action lawsuit that I am having a hard time joining. It is going to cost me over $8000 for a new transmission and I don't really know where to turn at this point or what to do! Please make GM issue a recall for this known transmission problem that they put in millions of vehicles, all having similar problems as my own! Thank you!

Transmission shakes constantly not just when shifting. Repair shop says this is not repairable and is a common issue in trucks like mine. 2016 GMC Sierra. Vibrations are significant enough to cause a safety issue. Getting worse with time.

Transmission shakes constantly not just when shifting. Repair shop says this is not repairable and is a common issue in trucks like mine. 2016 GMC Sierra. Vibrations are significant enough to cause a safety issue. Getting worse with time.

The transmission overheated due to a poorly manufactured torque converter which caused my truck to come to a sudden stop on the interstate nearly being struck by several semi tractor trailers leaving my family and I in a dangerous situation. Upon research the torque converter and the thermal bypass valve fail causing the transmission to overheat with no warning whatsoever. It massively blew smoke out of the tailpipe blocking all lanes of traffic, completely unable to see that I'm broke down and nearly caused several accidents. Police was not notified since no accident occurred. The transmission preformed as its supposed to. No hard shifts or slipping between gears. This needs to be addressed by the NHTSA and GM as it's a huge safety issue. With no warning light indicating the transmission is reaching critical heat levels and shutting down poses a risk in the event you're towing a trailer/camper (As I was). Or even worse happening to those who live where they drive up and down steep mountain grades.

The transmission overheated due to a poorly manufactured torque converter which caused my truck to come to a sudden stop on the interstate nearly being struck by several semi tractor trailers leaving my family and I in a dangerous situation. Upon research the torque converter and the thermal bypass valve fail causing the transmission to overheat with no warning whatsoever. It massively blew smoke out of the tailpipe blocking all lanes of traffic, completely unable to see that I'm broke down and nearly caused several accidents. Police was not notified since no accident occurred. The transmission preformed as its supposed to. No hard shifts or slipping between gears. This needs to be addressed by the NHTSA and GM as it's a huge safety issue. With no warning light indicating the transmission is reaching critical heat levels and shutting down poses a risk in the event you're towing a trailer/camper (As I was). Or even worse happening to those who live where they drive up and down steep mountain grades.

The electrical system keeps throwing a code for short to ground as well as low voltage codes. The voltage gauge on the dash shows either over charging or under charging. The in dash radio and screen shut off and turns back on by itself while driving down the road. Occasionally while backing up or pulling forward the truck completely stalls. The transmission was subject to the shudder issue, we took it to King Cadillac in Lake City, SC for the transmission flush. After the flush we have not felt the shudder, but instead Occasionally when pulling off from a dead stop, or while crossing the very busy highway my house is on the truck looses momentum almost as if the transmission is failing to engage at all, and all of the sudden about 15 seconds later it engages and accelerates at a rapid rate. The steering is extremely loose in the tires, however the steering wheel engages after about 3/4 of an inch. I have taken it to said King Cadillac multiple times and they maintain that the steering is 100%. Although I can not let go of the steering wheel and continue straight for any length of time. I am constantly having to adjust the steering to match the pull of the vehicle to avoid changing lanes or running of the road. After 60mph the tire shake is horrible, after 70mph it is hard to keep the truck in its lane.

The electrical system keeps throwing a code for short to ground as well as low voltage codes. The voltage gauge on the dash shows either over charging or under charging. The in dash radio and screen shut off and turns back on by itself while driving down the road. Occasionally while backing up or pulling forward the truck completely stalls. The transmission was subject to the shudder issue, we took it to King Cadillac in Lake City, SC for the transmission flush. After the flush we have not felt the shudder, but instead Occasionally when pulling off from a dead stop, or while crossing the very busy highway my house is on the truck looses momentum almost as if the transmission is failing to engage at all, and all of the sudden about 15 seconds later it engages and accelerates at a rapid rate. The steering is extremely loose in the tires, however the steering wheel engages after about 3/4 of an inch. I have taken it to said King Cadillac multiple times and they maintain that the steering is 100%. Although I can not let go of the steering wheel and continue straight for any length of time. I am constantly having to adjust the steering to match the pull of the vehicle to avoid changing lanes or running of the road. After 60mph the tire shake is horrible, after 70mph it is hard to keep the truck in its lane.

Transmission problems. Had to replace at 95,000 miles. Seeing problems online with same GM pickups with less miles and transmissions going out. General Motors has a problem and not addressing it.

Transmission problems. Had to replace at 95,000 miles. Seeing problems online with same GM pickups with less miles and transmissions going out. General Motors has a problem and not addressing it.

Check engine light on 2016 GMC Sierra, PO710 and PO711, took to local mechanic and notified me there is a service bulletin related to issue but VIN# shows no recall, below is the service bulletin found online. PIP5700 8L45 8L90 Internal Wiring Harness I

Check engine light on 2016 GMC Sierra, PO710 and PO711, took to local mechanic and notified me there is a service bulletin related to issue but VIN# shows no recall, below is the service bulletin found online. PIP5700 8L45 8L90 Internal Wiring Harness I

Torque Converter failed and destroyed the transmission at 79,600 miles

Torque Converter failed and destroyed the transmission at 79,600 miles

The transmission is almost banging into gear vibrating at high speeds the shifts can jerk the vehicle and cause an accident

The transmission is almost banging into gear vibrating at high speeds the shifts can jerk the vehicle and cause an accident

When in park and I shift the transmission into Reverse, the force engaging the gear bangs and shakes the vehicle. The transmission is not regulating the power. The vehicle is available for inspection. I took the vehicle in to the dealer service and they were able to reproduce it. They claim that there is a bulletin from GM motors and this is considered normal. The bang is hard and shakes the vehicle, definitely not normal. It started after 50k miles and the truck has 62k miles now. No one else inspected the vehicle and no warnings are indicated by the vehicle.

When in park and I shift the transmission into Reverse, the force engaging the gear bangs and shakes the vehicle. The transmission is not regulating the power. The vehicle is available for inspection. I took the vehicle in to the dealer service and they were able to reproduce it. They claim that there is a bulletin from GM motors and this is considered normal. The bang is hard and shakes the vehicle, definitely not normal. It started after 50k miles and the truck has 62k miles now. No one else inspected the vehicle and no warnings are indicated by the vehicle.

The torque converter jerks the truck and causes vibration. This does jerk the vehicle unsafely at times of stop lights. As I know this was a lawsuit at one point with GMC itself. It does nothing but get worse with pulling and jumping the truck going down the road.

The torque converter jerks the truck and causes vibration. This does jerk the vehicle unsafely at times of stop lights. As I know this was a lawsuit at one point with GMC itself. It does nothing but get worse with pulling and jumping the truck going down the road.

I DROVE UP TO A YIELD SIGN, WHEN ON COMING TRAFFIC WAS CLEAR I STEP ON THE GAS THEN I HEARD MY ENGINE KNOCKING I TRIED TO GO BUT I ONLY COULD GET UP TO 30 MPH I TOOK IT TO THE DEALERSHIP THEY DIAGNOSE IT AND SAID THAT THE NUMBER 7 CYLINDER HAD MISFIRED I HAD A MANCHANIC TO REPAIR IT AND IT COST ME $4200.00.

TRANSMISSION CHANGES HARD WHEN IT SHIFTS TO ANOTHER GEAR WHEN I PURCHASE THE TRUCK NEW I CONTACT GMC THEY SAID THAT IT WAS DESIGN TO SHIFT LIKE THAT EVERYONE THAT I KNOW HAS A SIERRA 1500 COMPLAINS ABOUT HOW HARD THEIR TRUCK SHIFTS I HAVE RELATIVES AND FRIENDS COMPLAINS ALSO. WHEN IT WAS UNDER WARANTY THEY TOLD ME THAT THE WRONG TRAMSMISSION FLUID WAS PUT IN IT FROM THE FACTORY ? MY TRUCK BRAND NEW.

I DROVE UP TO A YIELD SIGN, WHEN ON COMING TRAFFIC WAS CLEAR I STEP ON THE GAS THEN I HEARD MY ENGINE KNOCKING I TRIED TO GO BUT I ONLY COULD GET UP TO 30 MPH I TOOK IT TO THE DEALERSHIP THEY DIAGNOSE IT AND SAID THAT THE NUMBER 7 CYLINDER HAD MISFIRED I HAD A MANCHANIC TO REPAIR IT AND IT COST ME $4200.00.

TRANSMISSION CHANGES HARD WHEN IT SHIFTS TO ANOTHER GEAR WHEN I PURCHASE THE TRUCK NEW I CONTACT GMC THEY SAID THAT IT WAS DESIGN TO SHIFT LIKE THAT EVERYONE THAT I KNOW HAS A SIERRA 1500 COMPLAINS ABOUT HOW HARD THEIR TRUCK SHIFTS I HAVE RELATIVES AND FRIENDS COMPLAINS ALSO. WHEN IT WAS UNDER WARANTY THEY TOLD ME THAT THE WRONG TRAMSMISSION FLUID WAS PUT IN IT FROM THE FACTORY ? MY TRUCK BRAND NEW.

Torque converter and pump assembly failed at 66k miles 2016 GMC Sierra. Currently being repaired by the dealership. They first quoted me $4200 to replace but was able to talk them down to $3100.

Torque converter and pump assembly failed at 66k miles 2016 GMC Sierra. Currently being repaired by the dealership. They first quoted me $4200 to replace but was able to talk them down to $3100.

At low/idle speeds the brake pedal becomes hard and will not stop. At speeds between 35-75mph the engine/transmission has a vibration about every 10seconds and the transmission shifts hard and/or rough at times when first taking off.

At low/idle speeds the brake pedal becomes hard and will not stop. At speeds between 35-75mph the engine/transmission has a vibration about every 10seconds and the transmission shifts hard and/or rough at times when first taking off.

Took my truck to gmc dealership to get brakes and transmission fluids flushed, then a few months later I noticed that my truck started shifting hard. then one day going back home from work I lost 6th and 5th gear, would not go into either one. then I lost all gears and would just red line when I pressed the gas. had to coast into a parking lot to get a tow truck and carry it to a transmission shop. the shop said that the universal clutch was burned up and would now cost me $5,000 to fix.

Took my truck to gmc dealership to get brakes and transmission fluids flushed, then a few months later I noticed that my truck started shifting hard. then one day going back home from work I lost 6th and 5th gear, would not go into either one. then I lost all gears and would just red line when I pressed the gas. had to coast into a parking lot to get a tow truck and carry it to a transmission shop. the shop said that the universal clutch was burned up and would now cost me $5,000 to fix.

Just purchased this used vehicle in December 2022 with high miles (202000) with a dealers extended warranty. Problem has happened twice in 2 weeks. While backing up slowly and turning my wheel the vehicle stalled and Service Stabilitrak came across the dash as it died. Then upon restarting it told me to roll drivers window down and up and the memory seat function cleared as did my clock. Like it had a battery replacement and reset to factory. Took into a GMC service shop where they found code P0700 and P0711. They were able to replicate my concern. Telling me to replace the transmission harnesses and that it is not covered under my extended warranty for powertrain. Going to cost me $1500 in repairs. After extensive research I see this is a common problem yet no recall has been issued for my 2016 GMC Sierra crew cab. Very frustrating!!

Just purchased this used vehicle in December 2022 with high miles (202000) with a dealers extended warranty. Problem has happened twice in 2 weeks. While backing up slowly and turning my wheel the vehicle stalled and Service Stabilitrak came across the dash as it died. Then upon restarting it told me to roll drivers window down and up and the memory seat function cleared as did my clock. Like it had a battery replacement and reset to factory. Took into a GMC service shop where they found code P0700 and P0711. They were able to replicate my concern. Telling me to replace the transmission harnesses and that it is not covered under my extended warranty for powertrain. Going to cost me $1500 in repairs. After extensive research I see this is a common problem yet no recall has been issued for my 2016 GMC Sierra crew cab. Very frustrating!!

Was in a parking lot, moving just 2mph and had to literally mash down on the brake pedal - both forward and backward. Also, I put my truck in drive and has been making a noise in the transmission it seems and is a loud + lurches forward a bit. Additionally, I was traveling on vacation to Rockport, TX. I've made a appointment with the dealership here at 10:00 A.M. on 9 Dec 22, it's the earliest I can get my truck in. There was previously a brake issue covered under warranty & should be again!

Was in a parking lot, moving just 2mph and had to literally mash down on the brake pedal - both forward and backward. Also, I put my truck in drive and has been making a noise in the transmission it seems and is a loud + lurches forward a bit. Additionally, I was traveling on vacation to Rockport, TX. I've made a appointment with the dealership here at 10:00 A.M. on 9 Dec 22, it's the earliest I can get my truck in. There was previously a brake issue covered under warranty & should be again!

After an unexpected battery failure, truck shuttered and jerked violently when coming to a stop. Replaced battery and was driving home when shuttering returned and dropped into neutral as if it was trying to find the gear. Pull over and was within inches of being rear ended as it rolled to a stop on shoulder. Forced to abandon vehicle while waiting for tow truck for safety. Concerns were raised to dealer around 50k miles when something seemed off, but was dismissed with the excuse that it was normal. Now with 120k, I have nothing more than a $45k yard ornament.

After an unexpected battery failure, truck shuttered and jerked violently when coming to a stop. Replaced battery and was driving home when shuttering returned and dropped into neutral as if it was trying to find the gear. Pull over and was within inches of being rear ended as it rolled to a stop on shoulder. Forced to abandon vehicle while waiting for tow truck for safety. Concerns were raised to dealer around 50k miles when something seemed off, but was dismissed with the excuse that it was normal. Now with 120k, I have nothing more than a $45k yard ornament.

My transmission shifts very hard from first to second gear, and when accelerating onto a freeway. It literally jolts the entire vehicle. Recently on two occasions at less than 5 mph it shifted so hard it felt as if I was struck from behind by another vehicle. I’ve been told by my local GMC service department that it is a “learning” transmission and it’s learning how I drive. That was their remedy.

My transmission shifts very hard from first to second gear, and when accelerating onto a freeway. It literally jolts the entire vehicle. Recently on two occasions at less than 5 mph it shifted so hard it felt as if I was struck from behind by another vehicle. I’ve been told by my local GMC service department that it is a “learning” transmission and it’s learning how I drive. That was their remedy.

Vehicle shakes and shudders. Transmission required to be replaced at 70,710 miles. Dealership said the torque converter and transmission failure is a common event in these vehicles and wasn't covered under warranty

Vehicle shakes and shudders. Transmission required to be replaced at 70,710 miles. Dealership said the torque converter and transmission failure is a common event in these vehicles and wasn't covered under warranty

Transmission Harsh 1-2 shift. Under light or heavy throttle. While driving the vehicle on first or second shift the vehicle has a delay to engage into shift making it a safety issue under normal conditions. If shift happens under rain will activate traction control almost making you lose control. Due to transmission not engaging correctly or delayed. Upon slowing down the transmission down gear feels as if someone hit my truck from behind. Feels like whiplash from initial engagement to first and second gear and again whiplash for passengers especially kids in car seats when slowing down. # 16-NA-361 information on Transmission Harsh 1-2 shift. This is the bulletin GMC has put out in response to my hard shift when I took into dealer for repair. It also gives the direction DO NOT Replace any parts for this condition. This issue also began at 40k miles and under warranty Dealer doesn’t want to fix. At 80k miles even no warranty dealer won’t fix due to no check engine light on. How can the dealership state they can’t repair the issue being a safety issue. Or give another options to help fix the issue. Other than just buy a new car and hope it doesn’t have the same issues

Transmission Harsh 1-2 shift. Under light or heavy throttle. While driving the vehicle on first or second shift the vehicle has a delay to engage into shift making it a safety issue under normal conditions. If shift happens under rain will activate traction control almost making you lose control. Due to transmission not engaging correctly or delayed. Upon slowing down the transmission down gear feels as if someone hit my truck from behind. Feels like whiplash from initial engagement to first and second gear and again whiplash for passengers especially kids in car seats when slowing down. # 16-NA-361 information on Transmission Harsh 1-2 shift. This is the bulletin GMC has put out in response to my hard shift when I took into dealer for repair. It also gives the direction DO NOT Replace any parts for this condition. This issue also began at 40k miles and under warranty Dealer doesn’t want to fix. At 80k miles even no warranty dealer won’t fix due to no check engine light on. How can the dealership state they can’t repair the issue being a safety issue. Or give another options to help fix the issue. Other than just buy a new car and hope it doesn’t have the same issues

While putting truck into gear the transmission will not engage and will rev up and then take off or when coming to a stop the adaptive shift clunks very hard as if someone has hit you from behind. It will then surge forward without any warning. I have had it in to the dealer several times and they tell me it a know issue but they wont do anything about it.

While putting truck into gear the transmission will not engage and will rev up and then take off or when coming to a stop the adaptive shift clunks very hard as if someone has hit you from behind. It will then surge forward without any warning. I have had it in to the dealer several times and they tell me it a know issue but they wont do anything about it.

When I was driving down the road the transmission just quit working. But I have had ongoing problems of the truck shifting hard and popping out of gear while driving. I have also went to get on the interstate and the truck pop out of gear while merging in traffic now I can’t go more than a mile or 2 miles and truck quits moving completely. I have to turn truck off then bank on it will drive a mile and do the same thing again which has left me stranded in the middle of the road.

When I was driving down the road the transmission just quit working. But I have had ongoing problems of the truck shifting hard and popping out of gear while driving. I have also went to get on the interstate and the truck pop out of gear while merging in traffic now I can’t go more than a mile or 2 miles and truck quits moving completely. I have to turn truck off then bank on it will drive a mile and do the same thing again which has left me stranded in the middle of the road.

I pulled out in traffic with enough room to accelerate to the appropriate speed and my transmission begin to shutter and slip. My truck would not go! I was afraid I would be struck in the rear. This was the first sign of malfunction. I took truck in that day to Hardy GMC in Dallas GA. They informed me my transmissions was ruined. 84,000 miles. I have never towed anything, except golf clubs suitcases, and family members. It shameful that these transmissions are failing around the country with very little wear on them. I repaired the transmissions at an expense to me of $4,500. The warranty on the original transmission was only 60,000 miles, however, the warranty on the remanufactured transmission is 3 year or 100,000 mile. What a joke. Do the right thing. Back your product.

I pulled out in traffic with enough room to accelerate to the appropriate speed and my transmission begin to shutter and slip. My truck would not go! I was afraid I would be struck in the rear. This was the first sign of malfunction. I took truck in that day to Hardy GMC in Dallas GA. They informed me my transmissions was ruined. 84,000 miles. I have never towed anything, except golf clubs suitcases, and family members. It shameful that these transmissions are failing around the country with very little wear on them. I repaired the transmissions at an expense to me of $4,500. The warranty on the original transmission was only 60,000 miles, however, the warranty on the remanufactured transmission is 3 year or 100,000 mile. What a joke. Do the right thing. Back your product.

I purchased a certified pre owned 2016 sierra slt in February and just after a month of owning it a notification started to pop up and chime on my dash stating "SERVICE TRAILER BRAKE SYSTEM". I have had my truck in the shop multiple times after to have this issue repaired and nothing has worked. They replaced the dash GM Genuine Part 84108373 break controller switch and buttons, the GM Genuine Part 23337305 trailer brake control module as well as the 7/4 pin 23404450 GM OEM Trailer Tow Receptacle. Nothing has fixed this issue! when the truck chimes I lose my trailer breaks and this is extremely dangerous hauling a camper weight 6500lbs. I also lose the ability to make phone calls, hear my blinker also the radio. This renders my truck inoperable and a danger to drive.

I purchased a certified pre owned 2016 sierra slt in February and just after a month of owning it a notification started to pop up and chime on my dash stating "SERVICE TRAILER BRAKE SYSTEM". I have had my truck in the shop multiple times after to have this issue repaired and nothing has worked. They replaced the dash GM Genuine Part 84108373 break controller switch and buttons, the GM Genuine Part 23337305 trailer brake control module as well as the 7/4 pin 23404450 GM OEM Trailer Tow Receptacle. Nothing has fixed this issue! when the truck chimes I lose my trailer breaks and this is extremely dangerous hauling a camper weight 6500lbs. I also lose the ability to make phone calls, hear my blinker also the radio. This renders my truck inoperable and a danger to drive.

Torque converter went out causing hesitations which led to the entire transmission needing replaced.

Torque converter went out causing hesitations which led to the entire transmission needing replaced.

When placing the truck in Drive, there is a very hard 'clunk' between first and second gear. Additionally, when driving, the truck shakes/shudders, mostly on the highway, but sometimes in town when driving between 25 and 70 m.p.h. The first instance was in March, 2019 whereby the dealer indicated this was normal operation for this transmission. As it seemed to get worse, I took it back and was told the transmission fluid was the wrong type and I had to pay to get it evacuated and changed out, even though this was an error on GMs part.

When placing the truck in Drive, there is a very hard 'clunk' between first and second gear. Additionally, when driving, the truck shakes/shudders, mostly on the highway, but sometimes in town when driving between 25 and 70 m.p.h. The first instance was in March, 2019 whereby the dealer indicated this was normal operation for this transmission. As it seemed to get worse, I took it back and was told the transmission fluid was the wrong type and I had to pay to get it evacuated and changed out, even though this was an error on GMs part.

I purchased the 2016 GMC Sierra new. From the very start I felt there were issues with the transmission. I took the truck in for the shaking, vibrations and clunking in the trans with 5058 miles. Over the next 36 months I had the truck in 7 times and 3 different dealerships to get the trans fixed. Only once did they really do anything where they changed the fluid. I lived with the issues after the warranty expired as GM would not do anything to fix it. Now at 66,000 miles the vibrations have gotten so severe I am afraid to drive the truck. At no point has the truck not had vibrations, only they have increased. And now I have had 2 check engine warnings both dealing with the trans.

I purchased the 2016 GMC Sierra new. From the very start I felt there were issues with the transmission. I took the truck in for the shaking, vibrations and clunking in the trans with 5058 miles. Over the next 36 months I had the truck in 7 times and 3 different dealerships to get the trans fixed. Only once did they really do anything where they changed the fluid. I lived with the issues after the warranty expired as GM would not do anything to fix it. Now at 66,000 miles the vibrations have gotten so severe I am afraid to drive the truck. At no point has the truck not had vibrations, only they have increased. And now I have had 2 check engine warnings both dealing with the trans.

-Engine gas consumption states 21 MPG Highway, 17 MPG combined and 15 MPG City. -When I started using vehicle during the first weeks and months the best MPG I could geta at the highway was 18.5 MPG with top-tier gas. -Ever since I bought the vehicle, the gas MPG have gone down around 0.5 MPG. The vehicle feels that it has to use more gas in order to perform the level of task everyday. -The motor oil pump at times moves down from the 40 mark to the 20 mark when idle at traffic light and it starts moving, it temporarily goes to the 60 mark. At other times when idle it stays in the 30 mark. -The transmission is an 8 speed automatic. It has issues shifting 1st and 2nd gear, and at times 3rd gear as well. When driving at slow speeds like in a traffic jam, mall parking, do a u turn or when you slow down at the traffic light and then turns green and you start accelerating again it feels harsh on gearing up and down. -This vehicle has the Active Fuel Management (AFM) system, it turns on even at slower speeds and you feel how the engine and transmission struggle to accelerate, go a gear up and push the vehicle with only 4 cylinders. Like in manual transmissions when you accelerate on a higher gear than the correct one, it takes forever to accelerate and properly change to 8 cylinder and establish the correct gear and ratio. -Even if all 8 cylinders on it it feels like if I am running on a smaller engine. -There was a fix done to the transmission for a valve, but the vehicle still runs the same as before. -There is a knocking noise starting to build in the engine. Best mileage I can get driving the same and gas is 13 MPG combined. -The recent safety recall for the breaks is actually making the breaking worse than before. -My vehicle is 2016 GMC Sierra All Terrain V8 5.3L 4WD Z82 with 36,500 miles on it and is doing all this and its getting worse little at a time.

-Engine gas consumption states 21 MPG Highway, 17 MPG combined and 15 MPG City. -When I started using vehicle during the first weeks and months the best MPG I could geta at the highway was 18.5 MPG with top-tier gas. -Ever since I bought the vehicle, the gas MPG have gone down around 0.5 MPG. The vehicle feels that it has to use more gas in order to perform the level of task everyday. -The motor oil pump at times moves down from the 40 mark to the 20 mark when idle at traffic light and it starts moving, it temporarily goes to the 60 mark. At other times when idle it stays in the 30 mark. -The transmission is an 8 speed automatic. It has issues shifting 1st and 2nd gear, and at times 3rd gear as well. When driving at slow speeds like in a traffic jam, mall parking, do a u turn or when you slow down at the traffic light and then turns green and you start accelerating again it feels harsh on gearing up and down. -This vehicle has the Active Fuel Management (AFM) system, it turns on even at slower speeds and you feel how the engine and transmission struggle to accelerate, go a gear up and push the vehicle with only 4 cylinders. Like in manual transmissions when you accelerate on a higher gear than the correct one, it takes forever to accelerate and properly change to 8 cylinder and establish the correct gear and ratio. -Even if all 8 cylinders on it it feels like if I am running on a smaller engine. -There was a fix done to the transmission for a valve, but the vehicle still runs the same as before. -There is a knocking noise starting to build in the engine. Best mileage I can get driving the same and gas is 13 MPG combined. -The recent safety recall for the breaks is actually making the breaking worse than before. -My vehicle is 2016 GMC Sierra All Terrain V8 5.3L 4WD Z82 with 36,500 miles on it and is doing all this and its getting worse little at a time.

This complaint follows the same pattern for thousands of vehicles manufactured by General Motors. The specific component is the 8L90 (RPO-5MU) 8-speed transmission. The vehicle has experienced torque converter shudder since the purchase date of 06/28/2016. Numerous "attempts" via TSBs and cover-ups by General Motors has failed to alleviate the common shifting, shuddering, rough shifting, LURCHING out of control along with appurtenant damage to adjacent components and structures within the vehicle itself. The vehicle manufacturer has attempted to forestall remedy at the expense of consumers. It has knowingly violated specific requirements for merchantability of said vehicle. IF SUCH KNOWLEDGE had been in my possession prior to purchase, I would NEVER have purchased the subject vehicle. Damage to torque converter components via polluted fluid and destructive particles caused by torque converter malfunction are situated throughout the entire structure of the named Transmission itself. Valve bodies. Gears. Filters, Fluids and tolerances have all been affected by the KNOWN DEFICIENCY by the stated manufacturer: General Motors Corporation. General Motors has shown neither the desire; nor will, to effect a meaningful and reliable solution to this problem.

This complaint follows the same pattern for thousands of vehicles manufactured by General Motors. The specific component is the 8L90 (RPO-5MU) 8-speed transmission. The vehicle has experienced torque converter shudder since the purchase date of 06/28/2016. Numerous "attempts" via TSBs and cover-ups by General Motors has failed to alleviate the common shifting, shuddering, rough shifting, LURCHING out of control along with appurtenant damage to adjacent components and structures within the vehicle itself. The vehicle manufacturer has attempted to forestall remedy at the expense of consumers. It has knowingly violated specific requirements for merchantability of said vehicle. IF SUCH KNOWLEDGE had been in my possession prior to purchase, I would NEVER have purchased the subject vehicle. Damage to torque converter components via polluted fluid and destructive particles caused by torque converter malfunction are situated throughout the entire structure of the named Transmission itself. Valve bodies. Gears. Filters, Fluids and tolerances have all been affected by the KNOWN DEFICIENCY by the stated manufacturer: General Motors Corporation. General Motors has shown neither the desire; nor will, to effect a meaningful and reliable solution to this problem.

Experienced error code of P0307 after vehicle backfired while on highway. Check engine light and stabilitrak lights immediately turned on and vehicle was shaking violently. Immediately took vehicle to an independent shop to have it looked at. After running diagnostics, pressure tests, and bore scope. It has been determined that piston in cylinder 7 is a complete loss and has a 0 pressure reading. From talking with shop owner he said he sees this issue quite often with GM vehicles due to DOD or AFM (active fuel management) that GM has on their engines. I'm at just shy of 67k miles, out of warranty, and needing to replace the engine.

Experienced error code of P0307 after vehicle backfired while on highway. Check engine light and stabilitrak lights immediately turned on and vehicle was shaking violently. Immediately took vehicle to an independent shop to have it looked at. After running diagnostics, pressure tests, and bore scope. It has been determined that piston in cylinder 7 is a complete loss and has a 0 pressure reading. From talking with shop owner he said he sees this issue quite often with GM vehicles due to DOD or AFM (active fuel management) that GM has on their engines. I'm at just shy of 67k miles, out of warranty, and needing to replace the engine.

Sudden jerking while traveling at low speeds. This jerking / shuttering happens while traveling forward, reverse, and coming to a stop. Hard shifting while driving. I've never owned a 4x4 before and thought this was normal when I purchased the vehicle. After reading about this it seems like a known problem for Chevrolet, GMC, and Cadillac. Link below for exact issues going on with my truck. https://gmauthority.com/blog/2019/08/tsb-seems-to-fix-8-speed-automatic-gm-transmission-problems/

Sudden jerking while traveling at low speeds. This jerking / shuttering happens while traveling forward, reverse, and coming to a stop. Hard shifting while driving. I've never owned a 4x4 before and thought this was normal when I purchased the vehicle. After reading about this it seems like a known problem for Chevrolet, GMC, and Cadillac. Link below for exact issues going on with my truck. https://gmauthority.com/blog/2019/08/tsb-seems-to-fix-8-speed-automatic-gm-transmission-problems/

The transmission failed on my vehicle while going highway speeds. The vehicle shifted into neutral and I was force to pull onto the shoulder. The check engine light came on and would no longer drive without the vehicle being turned off and then back on. It would still repeat this problem over the next 2 miles while I traveled to an exit to get to a safe location. The vehicle was towed to the dealership and inspected. An internal problem was found and the whole transmission has to be replace at about 79000 miles.

The transmission failed on my vehicle while going highway speeds. The vehicle shifted into neutral and I was force to pull onto the shoulder. The check engine light came on and would no longer drive without the vehicle being turned off and then back on. It would still repeat this problem over the next 2 miles while I traveled to an exit to get to a safe location. The vehicle was towed to the dealership and inspected. An internal problem was found and the whole transmission has to be replace at about 79000 miles.

The truck shakes on right side, it has done this in the past and was taken into the dealer for repair it worked for a few months then it was back and not it has returned again. it is to the point that if feels unsafe to drive

The truck shakes on right side, it has done this in the past and was taken into the dealer for repair it worked for a few months then it was back and not it has returned again. it is to the point that if feels unsafe to drive

-Engine gas consumption state 21 MPG Highway, 17 MPG Combined and 15 MPG City. When I started using this vehicle during the first weeks and months the best MPG I could get at the highway is 18.5 MPG with top tier gas such Shell & Chevron during the first 2 years and now Costco brand. Every since I bought it, the gas MPG have gone down around 0.5 MPG. The vehicle feels that it has to use more gas in order to perform. -The motor oil pump at times moves down from the 40 mark to the 20 when idle at traffic light and when it starts moving, it temporarily moves to the 60 mark. -The transmission is an 8 speed automatic. It has issues shifting to first gear, second gear and times 3rd gear. When driving at slow speeds like in traffic jams, mall parking lots or when you slow down at the traffic light and then turns green and you start accelerating again it feels harsh on gearing down and up, like someone rear ended your vehicle. -This truck has the Active Fuel Management (AFM) and it turns on even slower speeds and you feel how the engine and transmission struggle to really gear up and down. Like it never gears and tries to accelerate at a higher gear. Like in manual transmissions when you accelerate on a higher gear than at correct own it takes forever to reach the needed speed. -Even if all 8 pistons are on it feels as if I am running on a smaller engine like a V6 or V4. -The driver car seat feels that move a little like an 1/8 of an inch. -It just feels that something is wrong with motor and transmission.

-Engine gas consumption state 21 MPG Highway, 17 MPG Combined and 15 MPG City. When I started using this vehicle during the first weeks and months the best MPG I could get at the highway is 18.5 MPG with top tier gas such Shell & Chevron during the first 2 years and now Costco brand. Every since I bought it, the gas MPG have gone down around 0.5 MPG. The vehicle feels that it has to use more gas in order to perform. -The motor oil pump at times moves down from the 40 mark to the 20 when idle at traffic light and when it starts moving, it temporarily moves to the 60 mark. -The transmission is an 8 speed automatic. It has issues shifting to first gear, second gear and times 3rd gear. When driving at slow speeds like in traffic jams, mall parking lots or when you slow down at the traffic light and then turns green and you start accelerating again it feels harsh on gearing down and up, like someone rear ended your vehicle. -This truck has the Active Fuel Management (AFM) and it turns on even slower speeds and you feel how the engine and transmission struggle to really gear up and down. Like it never gears and tries to accelerate at a higher gear. Like in manual transmissions when you accelerate on a higher gear than at correct own it takes forever to reach the needed speed. -Even if all 8 pistons are on it feels as if I am running on a smaller engine like a V6 or V4. -The driver car seat feels that move a little like an 1/8 of an inch. -It just feels that something is wrong with motor and transmission.

WHILE DRIVING THE VEHICLE HOME FROM WORK, THE VEHICLE SHUT DOWN IN THE MIDDLE OF TRAFFIC ON A STREET WHILE STOPPED AT A TRAFFIC LIGHT AND WOULD NOT MOVE AFTER ATTEMPTING TO PUT THE TRUCK IN "DRIVE". I HAD TO CALL FOR AN EMERGENCY ROADSIDE SERVICE (TOW TRUCK) WHICH TOWED THE VEHICLE TO A GMC DEALERSHIP SERVICE DEPT. I WAS TOLD BY THE SERVICE TECHNICIAN THAT THE TRANSMISSION TORQUE CONVERTER HAS DISINTEGRATED AND IT WOULD COST OVER $5000 TO REPAIR. THIS VEHICLE DID NOT PROVIDE ANY WARNINGS (NO WARNING SIGNAL DISPLAYED ON THE INSTRUMENT PANEL) THAT THE TRANSMISSION NEEDED SERVICING. I HAVE OWNED THIS VEHICLE FOR 3 YEARS. THIS VEHICLE NEEDS REVIEWING FOR A RECALL.

WHILE DRIVING THE VEHICLE HOME FROM WORK, THE VEHICLE SHUT DOWN IN THE MIDDLE OF TRAFFIC ON A STREET WHILE STOPPED AT A TRAFFIC LIGHT AND WOULD NOT MOVE AFTER ATTEMPTING TO PUT THE TRUCK IN "DRIVE". I HAD TO CALL FOR AN EMERGENCY ROADSIDE SERVICE (TOW TRUCK) WHICH TOWED THE VEHICLE TO A GMC DEALERSHIP SERVICE DEPT. I WAS TOLD BY THE SERVICE TECHNICIAN THAT THE TRANSMISSION TORQUE CONVERTER HAS DISINTEGRATED AND IT WOULD COST OVER $5000 TO REPAIR. THIS VEHICLE DID NOT PROVIDE ANY WARNINGS (NO WARNING SIGNAL DISPLAYED ON THE INSTRUMENT PANEL) THAT THE TRANSMISSION NEEDED SERVICING. I HAVE OWNED THIS VEHICLE FOR 3 YEARS. THIS VEHICLE NEEDS REVIEWING FOR A RECALL.

WHEN DRIVING I FELT A SLIGHT SHIFT BETWEEN 1 AND 2. THAT SEEMED PRETTY NORMAL. WHILE DRIVING TO THE OCEAN BETWEEN 50-60 MPH THERE WAS NOT SHIFTING, SHARKING OR JERKING. ONCE SLOWING DOWN TO 30-40 MPH THE RPMS GO EXTREMELY HIGH TO 4 OR 5. PULLING AND JERKING THE VEHICLE. HAPPENING AROUND 20-30 MPH OR AT 40-50. THE VEHICLE WILL COME TO A STOP CAUSING TRAFFIC DISRUPTIONS AND NEAR ACCIDENTS. NO SERVICE OR CODING HAVE BEEN ABLE TO DIAGNOSE ISSUE WITH VEHICLE.

WHEN DRIVING I FELT A SLIGHT SHIFT BETWEEN 1 AND 2. THAT SEEMED PRETTY NORMAL. WHILE DRIVING TO THE OCEAN BETWEEN 50-60 MPH THERE WAS NOT SHIFTING, SHARKING OR JERKING. ONCE SLOWING DOWN TO 30-40 MPH THE RPMS GO EXTREMELY HIGH TO 4 OR 5. PULLING AND JERKING THE VEHICLE. HAPPENING AROUND 20-30 MPH OR AT 40-50. THE VEHICLE WILL COME TO A STOP CAUSING TRAFFIC DISRUPTIONS AND NEAR ACCIDENTS. NO SERVICE OR CODING HAVE BEEN ABLE TO DIAGNOSE ISSUE WITH VEHICLE.

I'VE HAD MOVEMENT IN MY DRIVERS SEAT SINCE THE DAY I'VE OWNER THE TRUCK. GMC PUT IN A SHIM KIT TO ADDRESS THE PROBLEM BUT IT'S STILL ACTING UP. THEY REFUSE TO REPLACE OR REPAIR ANY FURTHER. ALSO MY TRANSMISSION HAS A HORRIBLE SHIFTING PROBLEM. WHEN IT'S COLD OUT OR AFTER THE FIRST TIME SHIFTING INTO GEAR AFTER SITTING A LONG TIME, THE TRUCK LAGS TO SHIFT INTO GEAR THEN ALL OF A SUDDEN LUNGES FORWARD OR BACKWARDS DEPENDING ON WHICH GEAR I'M IN. I'VE ALMOST RAN THROUGH MY GARAGE DOOR AND SIDE FENCE AND HAD TO SLAM ON THE BRAKES. GMC HAS LOOKED INTO THE ISSUES BUT WON'T RESOLVE THEM. THE LAST 'REPAIR' MADE WAS TO CHANGE OUT THE TRANSMISSION FLUID. THAT HAD HELPED WITH THE HARD SHIFTING WHILE DRIVING BUT THE TRUCK STILL LUNGES FORWARD OR BACKWARDS AND LAGS SHIFTING INTO GEAR. I'VE HAD TO LEARN TO DEAL WITH IT BUT ANYONE ELSE WHO WOULD DRIVE MY TRUCK COULD SERIOUSLY HURT THEMSELVES OR SOMEONE ELSE

I'VE HAD MOVEMENT IN MY DRIVERS SEAT SINCE THE DAY I'VE OWNER THE TRUCK. GMC PUT IN A SHIM KIT TO ADDRESS THE PROBLEM BUT IT'S STILL ACTING UP. THEY REFUSE TO REPLACE OR REPAIR ANY FURTHER. ALSO MY TRANSMISSION HAS A HORRIBLE SHIFTING PROBLEM. WHEN IT'S COLD OUT OR AFTER THE FIRST TIME SHIFTING INTO GEAR AFTER SITTING A LONG TIME, THE TRUCK LAGS TO SHIFT INTO GEAR THEN ALL OF A SUDDEN LUNGES FORWARD OR BACKWARDS DEPENDING ON WHICH GEAR I'M IN. I'VE ALMOST RAN THROUGH MY GARAGE DOOR AND SIDE FENCE AND HAD TO SLAM ON THE BRAKES. GMC HAS LOOKED INTO THE ISSUES BUT WON'T RESOLVE THEM. THE LAST 'REPAIR' MADE WAS TO CHANGE OUT THE TRANSMISSION FLUID. THAT HAD HELPED WITH THE HARD SHIFTING WHILE DRIVING BUT THE TRUCK STILL LUNGES FORWARD OR BACKWARDS AND LAGS SHIFTING INTO GEAR. I'VE HAD TO LEARN TO DEAL WITH IT BUT ANYONE ELSE WHO WOULD DRIVE MY TRUCK COULD SERIOUSLY HURT THEMSELVES OR SOMEONE ELSE

DRIVING ON THE HIGHWAY BRAKES LOCKED UP BREAK PEDAL SUPER HARD TO PRESS

DRIVING ON THE HIGHWAY BRAKES LOCKED UP BREAK PEDAL SUPER HARD TO PRESS

WHEN DRIVING AND THE TRUCK SHIFTS GEAR IN 30MPH IT STARTS TO VIBRATE OR JERK AND THE RPM JUST BOUNCES UP AND DOWN SAME THING HAPPENS IN 40 MPH AND 50 MPH AS WELL I HAVE TAKEN IT TO THE DEALER SHIP IN FALL OF 2019 AND ALL THEY DID WAS A TRANS FLUID FLUSH. AND WORKED FINE FOR A BIT NOW THE TRUCK STARTED TO DO THE SAME THIN IN THE BEGINING OF JULY 2020 AND TOOK IT AGAIN TO THE DEALER AND THEY WANTED TO DO THE SAME THING THEY DID IN 2019 DO THE TRANS FLUID FLUSH. NOT THIS TIME MY EXTENDED WARRANTY WAS NOT COVERING IT BECAUSE THE SAID IT WAS A MAINTENANCE WHICH IS NOT CORRECT BECAUSE GM KNOW IT WAS AN ISSUE AND I HAD ALREADY DONE THE FLUCH BACK IN 2019 AND THE DEALER DIDNT WANT TO COVER IT ETHIER I WOULD HAVE TO PAY ALMOST 500 TO GET IT DONE. I DONT KNOW HAT ELSE TO DO

WHEN DRIVING AND THE TRUCK SHIFTS GEAR IN 30MPH IT STARTS TO VIBRATE OR JERK AND THE RPM JUST BOUNCES UP AND DOWN SAME THING HAPPENS IN 40 MPH AND 50 MPH AS WELL I HAVE TAKEN IT TO THE DEALER SHIP IN FALL OF 2019 AND ALL THEY DID WAS A TRANS FLUID FLUSH. AND WORKED FINE FOR A BIT NOW THE TRUCK STARTED TO DO THE SAME THIN IN THE BEGINING OF JULY 2020 AND TOOK IT AGAIN TO THE DEALER AND THEY WANTED TO DO THE SAME THING THEY DID IN 2019 DO THE TRANS FLUID FLUSH. NOT THIS TIME MY EXTENDED WARRANTY WAS NOT COVERING IT BECAUSE THE SAID IT WAS A MAINTENANCE WHICH IS NOT CORRECT BECAUSE GM KNOW IT WAS AN ISSUE AND I HAD ALREADY DONE THE FLUCH BACK IN 2019 AND THE DEALER DIDNT WANT TO COVER IT ETHIER I WOULD HAVE TO PAY ALMOST 500 TO GET IT DONE. I DONT KNOW HAT ELSE TO DO

PROBLEMS WITH TRANSMISSION JERKING,HARD SHIFTING,JUMPING, ONLY HAVE 60,000 MILES ON IT. TOOK IT BACK TO DEALER 3 TIMES AND THEY TOLD ME EACH TIME IT WAS NORMAL. TOLD THEM I HAVE BEEN DRIVING 40 YEARS AND THAT WAS NOT NORMAL. THEY NEVER DONE ANYTHING. NOW I AM HAVING MORE PROBLEMS WITH IT, GETTING WORSE. NOW I FIND OUT THERE IS A LOT OF PEOPLE WITH SAME PROBLEMS. GMC KNOWS SOMETHING IS WRONG AND SHOULD TAKE CARE OF IT. *TR

PROBLEMS WITH TRANSMISSION JERKING,HARD SHIFTING,JUMPING, ONLY HAVE 60,000 MILES ON IT. TOOK IT BACK TO DEALER 3 TIMES AND THEY TOLD ME EACH TIME IT WAS NORMAL. TOLD THEM I HAVE BEEN DRIVING 40 YEARS AND THAT WAS NOT NORMAL. THEY NEVER DONE ANYTHING. NOW I AM HAVING MORE PROBLEMS WITH IT, GETTING WORSE. NOW I FIND OUT THERE IS A LOT OF PEOPLE WITH SAME PROBLEMS. GMC KNOWS SOMETHING IS WRONG AND SHOULD TAKE CARE OF IT. *TR

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING ABOUT 70 MPH, THE VEHICLE SHUDDERED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE PENSKE BUICK, GMC OF SOUTH BAY LOCATED AT 18600 HAWTHORNE BLVD, TORRANCE, CA 90504, (310) 853-5860, WHERE THE VEHICLE WAS DIAGNOSED AND TECHNICIAN CHANGED THE TRANSMISSION FLUID HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND THE CONTACT WAS REFERRED BACK TO THE DEALER. THE APPROXIMATE FAILURE MILEAGE WAS 47,000. THE VIN WAS INVALID.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING ABOUT 70 MPH, THE VEHICLE SHUDDERED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE PENSKE BUICK, GMC OF SOUTH BAY LOCATED AT 18600 HAWTHORNE BLVD, TORRANCE, CA 90504, (310) 853-5860, WHERE THE VEHICLE WAS DIAGNOSED AND TECHNICIAN CHANGED THE TRANSMISSION FLUID HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND THE CONTACT WAS REFERRED BACK TO THE DEALER. THE APPROXIMATE FAILURE MILEAGE WAS 47,000. THE VIN WAS INVALID.

SOMETIMES AT CERTAIN RPM WHEN THE TRUCK SHIFTS IT SHIFT REALLY HARD JERKING THE WHOLE TRUCK

SOMETIMES AT CERTAIN RPM WHEN THE TRUCK SHIFTS IT SHIFT REALLY HARD JERKING THE WHOLE TRUCK

8 SPEED TRANSMISSION SHUDDER AND JERK. HAVE TAKEN IT TO THE DEALERSHIP SEVERAL TIMES REGARDING THIS ISSUE, NOTHING HAS COMPLETELY FIX THE ISSUE.

8 SPEED TRANSMISSION SHUDDER AND JERK. HAVE TAKEN IT TO THE DEALERSHIP SEVERAL TIMES REGARDING THIS ISSUE, NOTHING HAS COMPLETELY FIX THE ISSUE.

TRANSMISSION HAS FAILED FROM 4TH GEAR UP (3) TIMES WITHIN 91,000 MILES. WHEN GOING AT SPEEDS MORE THAN 50 MILES AN HOUR, THE TRANSMISSION WILL BREAK AND LOSE FORWARD MOTION CAUSING A SAFETY ISSUE WITH ONCOMING TRAFFIC. THE TRANSMISSION WAS "REBUILT" AT LAFONTAINE GMC OF HIGHLAND, MI (2) TIMES AND THEY ARE TELLING ME THEY ARE GOING TO "REBUILD" IT A 3RD TIME. JUST WANTED TO NOTE SAFETY ISSUE SO WHEN THIS HAPPENS IN THE FUTURE I WILL HAVE A LEGAL AVENUE.

TRANSMISSION HAS FAILED FROM 4TH GEAR UP (3) TIMES WITHIN 91,000 MILES. WHEN GOING AT SPEEDS MORE THAN 50 MILES AN HOUR, THE TRANSMISSION WILL BREAK AND LOSE FORWARD MOTION CAUSING A SAFETY ISSUE WITH ONCOMING TRAFFIC. THE TRANSMISSION WAS "REBUILT" AT LAFONTAINE GMC OF HIGHLAND, MI (2) TIMES AND THEY ARE TELLING ME THEY ARE GOING TO "REBUILD" IT A 3RD TIME. JUST WANTED TO NOTE SAFETY ISSUE SO WHEN THIS HAPPENS IN THE FUTURE I WILL HAVE A LEGAL AVENUE.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE SLAMMED AND JERKED INTO GEAR. WHEN THE BRAKE PEDAL WAS DEPRESSED, THERE WAS A SHUTTER AND VIBRATION DETECTED IN THE TRANSMISSION. THE VEHICLE WAS TAKEN TO MAC HAIK CHRYSLER DODGE JEEP RAM (12111 KATY FWY, HOUSTON, TX 77079, (713) 538-2700) WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION FLUID NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO MONUMENT CHEVROLET (3940 PASADENA FWY, PASADENA, TX 77503, (713) 473-7601), BUT WAS NOT DIAGNOSED OR REPAIRED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE MANUFACTURER WAS CONTACTED AND PROVIDED CASE NUMBER: 9-5585814814, BUT NO FURTHER ASSISTANCE WAS PROVIDED. THE FAILURE MILEAGE WAS 50,000.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE SLAMMED AND JERKED INTO GEAR. WHEN THE BRAKE PEDAL WAS DEPRESSED, THERE WAS A SHUTTER AND VIBRATION DETECTED IN THE TRANSMISSION. THE VEHICLE WAS TAKEN TO MAC HAIK CHRYSLER DODGE JEEP RAM (12111 KATY FWY, HOUSTON, TX 77079, (713) 538-2700) WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION FLUID NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO MONUMENT CHEVROLET (3940 PASADENA FWY, PASADENA, TX 77503, (713) 473-7601), BUT WAS NOT DIAGNOSED OR REPAIRED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE MANUFACTURER WAS CONTACTED AND PROVIDED CASE NUMBER: 9-5585814814, BUT NO FURTHER ASSISTANCE WAS PROVIDED. THE FAILURE MILEAGE WAS 50,000.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING LOW SPEEDS, THE VEHICLE SHIFTED UP AND DOWN VERY ABRUPTLY AND SHUDDERED UNCONTROLLABLY. THE FAILURE OCCURRED WHEN ACCELERATING OR DECELERATING WITHOUT WARNING. THE VEHICLE WAS SERVICED THREE TIMES AT CAVENDER BUICK GMC NORTH (17811 SAN PEDRO AVE, SAN ANTONIO, TX 78232, 210-807-6392) WHERE THE TRANSMISSION SOFTWARE WAS RE-CODED AND A SPECIAL TRANSMISSION FLUID WAS APPLIED TO THE VEHICLE. THE FAILURE PERSISTED EACH TIME AFTER IT WAS SERVICED BY THE DEALER. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 1,000.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING LOW SPEEDS, THE VEHICLE SHIFTED UP AND DOWN VERY ABRUPTLY AND SHUDDERED UNCONTROLLABLY. THE FAILURE OCCURRED WHEN ACCELERATING OR DECELERATING WITHOUT WARNING. THE VEHICLE WAS SERVICED THREE TIMES AT CAVENDER BUICK GMC NORTH (17811 SAN PEDRO AVE, SAN ANTONIO, TX 78232, 210-807-6392) WHERE THE TRANSMISSION SOFTWARE WAS RE-CODED AND A SPECIAL TRANSMISSION FLUID WAS APPLIED TO THE VEHICLE. THE FAILURE PERSISTED EACH TIME AFTER IT WAS SERVICED BY THE DEALER. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 1,000.

TL* THE CONTACT OWNS A 2016 A GMC SIERRA 1500. WHILE DRIVING 65 MPH, THE VEHICLE STARTED WOBBLING. THE VEHICLE WAS TAKEN TO WALLINGFORD BUICK GMC (1122 OLD NORTH COLONY RD, WALLINGFORD, CT 06492, (203) 269-8741) WHERE THE BRAKE PADS ON THE FRONT DRIVER'S SIDE WHEEL WERE REPLACED; HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE DEALER AND TEST DRIVEN. THE TECHNICIAN DIAGNOSED THAT THE ROTORS NEEDED TO BE RESURFACED, THE FRONT BRAKE PADS NEEDED TO BE CHANGED, THE TRANSMISSION FLUID NEEDED TO BE DRAINED, AND THE COMPUTER NEEDED TO BE RESET. THE CONTACT RETRIEVED THE VEHICLE AND THE FAILURES RECURRED THE FOLLOWING DAY. THE DEALER ADVISED THE CONTACT TO GIVE THE VEHICLE A FEW THOUSAND MILES TO WORK OUT THE FAILURES AND STATED THAT THE TRANSMISSION WAS ADJUSTING TO THE CONTACT'S DRIVING HABITS. THE VEHICLE WAS NOT REPAIRED AGAIN AND THE FAILURES WERE STILL PRESENT. THE FAILURE MILEAGE AND VIN WERE UNKNOWN.

TL* THE CONTACT OWNS A 2016 A GMC SIERRA 1500. WHILE DRIVING 65 MPH, THE VEHICLE STARTED WOBBLING. THE VEHICLE WAS TAKEN TO WALLINGFORD BUICK GMC (1122 OLD NORTH COLONY RD, WALLINGFORD, CT 06492, (203) 269-8741) WHERE THE BRAKE PADS ON THE FRONT DRIVER'S SIDE WHEEL WERE REPLACED; HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE DEALER AND TEST DRIVEN. THE TECHNICIAN DIAGNOSED THAT THE ROTORS NEEDED TO BE RESURFACED, THE FRONT BRAKE PADS NEEDED TO BE CHANGED, THE TRANSMISSION FLUID NEEDED TO BE DRAINED, AND THE COMPUTER NEEDED TO BE RESET. THE CONTACT RETRIEVED THE VEHICLE AND THE FAILURES RECURRED THE FOLLOWING DAY. THE DEALER ADVISED THE CONTACT TO GIVE THE VEHICLE A FEW THOUSAND MILES TO WORK OUT THE FAILURES AND STATED THAT THE TRANSMISSION WAS ADJUSTING TO THE CONTACT'S DRIVING HABITS. THE VEHICLE WAS NOT REPAIRED AGAIN AND THE FAILURES WERE STILL PRESENT. THE FAILURE MILEAGE AND VIN WERE UNKNOWN.

TRUCK LURCHES FORWARD UNEXPECTEDLY DURING SLOW STOPS SUCH AS WHEN APPROACHING A BARRIER TO PARK, A GATE, OR PEDESTRIAN CROSSING. AS THE TRANSMISSION DOWNSHIFTS, THE TORQUE INCREASE CAUSES THE BRAKE PRESSURE BEING APPLIED TO BECOME INSUFFICIENT TO STOP THE VEHICLE CAUSING IT TO LURCH FORWARD UP TO SIX FEET. DURING ACCELLERATION WHILE HIGHWAY DRIVING THE TRANSMISSION MAY UNEXPECTEDLY DOWNSHIFT TO AN INAPPROPRIATE GEAR CAUSING THE ENGINE REV LIMITER TO ENGAGE AND REDUCING POWER UNEXPECTEDLY WHEN IT SHOULD BE INCREASING.

TRUCK LURCHES FORWARD UNEXPECTEDLY DURING SLOW STOPS SUCH AS WHEN APPROACHING A BARRIER TO PARK, A GATE, OR PEDESTRIAN CROSSING. AS THE TRANSMISSION DOWNSHIFTS, THE TORQUE INCREASE CAUSES THE BRAKE PRESSURE BEING APPLIED TO BECOME INSUFFICIENT TO STOP THE VEHICLE CAUSING IT TO LURCH FORWARD UP TO SIX FEET. DURING ACCELLERATION WHILE HIGHWAY DRIVING THE TRANSMISSION MAY UNEXPECTEDLY DOWNSHIFT TO AN INAPPROPRIATE GEAR CAUSING THE ENGINE REV LIMITER TO ENGAGE AND REDUCING POWER UNEXPECTEDLY WHEN IT SHOULD BE INCREASING.

WHEN TRAVELING LOW SPEEDS LIKE IN A PARKING LOT FIRST GEAR JERKS SO BAD IT FEELS LIKE SOMEONE REAR ENDED YOU. GOING HIGHWAY SPEEDS BETWEEN 45 TO 75 YOU FEEL VIBRATIONS COMING FROM THE TRANSMISSION IT FEELS LIKE YOU'RE GOING OVER RUMBLE STRIPS. I HAD MY TRANSMISSION FLUSHED AND CHANGED IT FIX THE VIBRATIONS BUT 3000 MILES LATER THE VIBRATIONS STARTED AGAIN.

WHEN TRAVELING LOW SPEEDS LIKE IN A PARKING LOT FIRST GEAR JERKS SO BAD IT FEELS LIKE SOMEONE REAR ENDED YOU. GOING HIGHWAY SPEEDS BETWEEN 45 TO 75 YOU FEEL VIBRATIONS COMING FROM THE TRANSMISSION IT FEELS LIKE YOU'RE GOING OVER RUMBLE STRIPS. I HAD MY TRANSMISSION FLUSHED AND CHANGED IT FIX THE VIBRATIONS BUT 3000 MILES LATER THE VIBRATIONS STARTED AGAIN.

I HAVE HAD ISSUES WITH MY GMC SIERRA SINCE IT WAS NEW. IT HAS JERKED AND CLUNKED WHEN I START TO GO AND THEN LEFT OFF THE GAS. THERE HAS ALSO BEEN A HESITATION WHEN STEPPING ON THE GUESS. I HAVE TAKEN IT TO THE DEALER SEVERAL TIMES AND WAS TOLD THINGS SUCH AS: "I JUST NEEDED TO GET USE TO THE 8 SPEED TRANSMISSION"," THE HESITATION IS WHEN THE TRUCK SWITCHES FROM V4 TO V8". AND "THERE IS NOTHING WRONG". NOW THE WARRANTY HAS EXPIRED AND IT IS GETTING WORSE. IT NOW FEELS LIKE "RUNNING OVER A RUMBLE STRIP" OR LIKE IT IS "MISSING" AND "HESITATING". ALL OF THESE THINGS OCCUR WHEN THE VEHICLE IS IN MOTION.

I HAVE HAD ISSUES WITH MY GMC SIERRA SINCE IT WAS NEW. IT HAS JERKED AND CLUNKED WHEN I START TO GO AND THEN LEFT OFF THE GAS. THERE HAS ALSO BEEN A HESITATION WHEN STEPPING ON THE GUESS. I HAVE TAKEN IT TO THE DEALER SEVERAL TIMES AND WAS TOLD THINGS SUCH AS: "I JUST NEEDED TO GET USE TO THE 8 SPEED TRANSMISSION"," THE HESITATION IS WHEN THE TRUCK SWITCHES FROM V4 TO V8". AND "THERE IS NOTHING WRONG". NOW THE WARRANTY HAS EXPIRED AND IT IS GETTING WORSE. IT NOW FEELS LIKE "RUNNING OVER A RUMBLE STRIP" OR LIKE IT IS "MISSING" AND "HESITATING". ALL OF THESE THINGS OCCUR WHEN THE VEHICLE IS IN MOTION.

MY 8 SPEED TRANSMISSION SEEM TO WAIT TOO LONG TO UP SHIFT. WILL DOWN SHIFT AT ODD TIMES. WHEN IS STOP AND GO TRAFFIC AROUND 5-15 MPH THE TRUCK WILL LURCH FORWARD WHEN COASTING OR COMING TO A STOP. WHEN TRUING ON THE TRUCK AND GOING FROM PARK TO REVERSE THERE WILL BE A LOUD "CLUNK" THAT CAN ALSO BE FELT CAUSING THE TRUCK TO ROCK.

MY 8 SPEED TRANSMISSION SEEM TO WAIT TOO LONG TO UP SHIFT. WILL DOWN SHIFT AT ODD TIMES. WHEN IS STOP AND GO TRAFFIC AROUND 5-15 MPH THE TRUCK WILL LURCH FORWARD WHEN COASTING OR COMING TO A STOP. WHEN TRUING ON THE TRUCK AND GOING FROM PARK TO REVERSE THERE WILL BE A LOUD "CLUNK" THAT CAN ALSO BE FELT CAUSING THE TRUCK TO ROCK.

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

TRUCK HESITATES, JUMPS, AND BUMPS WHEN APPLYING BRAKES. WHEN STEPPING ON BRAKES TO STOP, IT BUMPS AND JUMPS BEFORE IT ACTUALLY COMES TO A FULL STOP. IT SEEMS YOU REALLY HAVE TO STEP ON THE BRAKE HARD TO MAKE IT COME TO A FULL STOP. THIS IS WORSE ON LOW SPEED, BELOW 30 MPH, STOP AND GO TRAFFIC. THERE WERE A NUMBER OF INSTANCES I ALMOST REAR ENDED VEHICLES IN FRONT OF ME DUE TO THIS PROBLEM. THE TRUCK ALSO BUMPS AND JUMPS WHEN TAKING OFF. I THINK THIS STARTED A FEW MONTHS AFTER I GOT THE TRUCK BRAND NEW. IT IS GETTING PROGRESSIVELY WORSE. I TOOK IT A NUMBER OF TIMES TO GM SERVICE CENTER; THEY DID A TRANSMISSION RELEARN, SOFTWARE UPDATES, AND TRANSMISSION FLUSH--TRUCK GOT BETTER FOR ONLY A FEW HUNDRED MILES, THEN SAME PROBLEMS RECURRED. THE LATEST COUPLE OF TIMES I WENT BACK TO GM SERVICE, THEY TOLD ME NOTHING IS WRONG WITH MY TRUCK. IT HAS BEEN VERY FRUSTRATING DEALING WITH THIS PROBLEM AND GM SERVICE FOR THE PAST 3 YEARS.

TRUCK HESITATES, JUMPS, AND BUMPS WHEN APPLYING BRAKES. WHEN STEPPING ON BRAKES TO STOP, IT BUMPS AND JUMPS BEFORE IT ACTUALLY COMES TO A FULL STOP. IT SEEMS YOU REALLY HAVE TO STEP ON THE BRAKE HARD TO MAKE IT COME TO A FULL STOP. THIS IS WORSE ON LOW SPEED, BELOW 30 MPH, STOP AND GO TRAFFIC. THERE WERE A NUMBER OF INSTANCES I ALMOST REAR ENDED VEHICLES IN FRONT OF ME DUE TO THIS PROBLEM. THE TRUCK ALSO BUMPS AND JUMPS WHEN TAKING OFF. I THINK THIS STARTED A FEW MONTHS AFTER I GOT THE TRUCK BRAND NEW. IT IS GETTING PROGRESSIVELY WORSE. I TOOK IT A NUMBER OF TIMES TO GM SERVICE CENTER; THEY DID A TRANSMISSION RELEARN, SOFTWARE UPDATES, AND TRANSMISSION FLUSH--TRUCK GOT BETTER FOR ONLY A FEW HUNDRED MILES, THEN SAME PROBLEMS RECURRED. THE LATEST COUPLE OF TIMES I WENT BACK TO GM SERVICE, THEY TOLD ME NOTHING IS WRONG WITH MY TRUCK. IT HAS BEEN VERY FRUSTRATING DEALING WITH THIS PROBLEM AND GM SERVICE FOR THE PAST 3 YEARS.

WHEN DRIVING IN SLOW MOVING TRAFFIC TRANS MISSION FEELS VERY JERKY AND SHIFTS HARD. ALSO WHEN GOING FROM PARK TO REVERSE TRANSMISSION WILL CLUNK VERY HARD CAUSING THE TRUCK TO MOVE. TRUCK ALSO SEEMS TO HESITATE WHEN TRYING TO SHIFT IN LOWER GEARS WHILE ACCELERATING. THIS HAS BEEN AN ONGOING ISSUE SINCE PURCHASING THE TRUCK BRAND NEW FROM THE DEALERSHIP. PRIOR ATTEMPTS FOR SERVICE HAVE BEEN EXPLAINED BY THEIR TECHNICIANS AS BEING AN ADAPTIVE TRANSMISSION NEEDING TO LEARN

WHEN DRIVING IN SLOW MOVING TRAFFIC TRANS MISSION FEELS VERY JERKY AND SHIFTS HARD. ALSO WHEN GOING FROM PARK TO REVERSE TRANSMISSION WILL CLUNK VERY HARD CAUSING THE TRUCK TO MOVE. TRUCK ALSO SEEMS TO HESITATE WHEN TRYING TO SHIFT IN LOWER GEARS WHILE ACCELERATING. THIS HAS BEEN AN ONGOING ISSUE SINCE PURCHASING THE TRUCK BRAND NEW FROM THE DEALERSHIP. PRIOR ATTEMPTS FOR SERVICE HAVE BEEN EXPLAINED BY THEIR TECHNICIANS AS BEING AN ADAPTIVE TRANSMISSION NEEDING TO LEARN

TRANSMISSION SHIFTS HARD GOING FROM 1ST TO 2ND GEAR WITH NO FIX FROM GM. COMPLAINED TO DEALER THEY SAID IT'S NORMAL AND THERE'S NO FIX FOR THE ISSUE. ISSUE ALSO PERSIST WHEN GOING FROM DRIVE TO REVERSE, A HARD SHIFT THAT I'VE NEVER EXPERIENCED BEFORE IN SEVERAL PREVIOUS GM PRODUCTS I OWNED OR CURRENTLY OWN. HAPPENS EVERY TIME I DRIVE THE VEHICLE

TRANSMISSION SHIFTS HARD GOING FROM 1ST TO 2ND GEAR WITH NO FIX FROM GM. COMPLAINED TO DEALER THEY SAID IT'S NORMAL AND THERE'S NO FIX FOR THE ISSUE. ISSUE ALSO PERSIST WHEN GOING FROM DRIVE TO REVERSE, A HARD SHIFT THAT I'VE NEVER EXPERIENCED BEFORE IN SEVERAL PREVIOUS GM PRODUCTS I OWNED OR CURRENTLY OWN. HAPPENS EVERY TIME I DRIVE THE VEHICLE

2016 GMC SIERRA- BOUGHT USED HARD SHIFTING NOTED IMMEDIATELY AND SHUTTERING ON INCLINES, TOOK TO DEALERSHIP HAD PART REPLACED- FIXED SHUTTERING BUT NOT HARD SHIFTS- NOW IT NOT ONLY SHIFTS HARD BUT WHILE I WAS TRYING TO STOP AT A DRIVE THROUGH THE BRAKES FAILED- LUNGES FORWARD ALMOST HITTING THE CAR IN FRONT OF US- NEXT DAY I PULLED INTO A PARKING SPOT SAME THING HAPPENED- BRAKES WOULD NOT COMPRESS- STOOD ON THE BRAKE BEFORE IT FINALLY STOPPED- BACKED UP A BIT TO STRAIGHTEN UP AND THE [XXX] THING DID IT AGAIN IN REVERSE. I'M TRAVELING BACK HOME TO ARKANSAS FROM FLORIDA IN A FEW DAYS WITH MY CHILDREN AND I'M SCARED TO DEATH TO DRIVE THIS THING. I CAN'T GET IT LOOKED AT BEFORE WE LEAVE BECAUSE OF THE WEEKEND/ CHRISTMAS BREAK.SERIOUSLY UNSAFE VEHICLE! THERE SHOULD BE RECALLS ON THESE VEHICLES! I'VE READ SO MANY SIMILAR STORIES, WHY HAS THIS NOT BEEN ADDRESSED YET? GMC SHOULD BE ASHAMED. PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

2016 GMC SIERRA- BOUGHT USED HARD SHIFTING NOTED IMMEDIATELY AND SHUTTERING ON INCLINES, TOOK TO DEALERSHIP HAD PART REPLACED- FIXED SHUTTERING BUT NOT HARD SHIFTS- NOW IT NOT ONLY SHIFTS HARD BUT WHILE I WAS TRYING TO STOP AT A DRIVE THROUGH THE BRAKES FAILED- LUNGES FORWARD ALMOST HITTING THE CAR IN FRONT OF US- NEXT DAY I PULLED INTO A PARKING SPOT SAME THING HAPPENED- BRAKES WOULD NOT COMPRESS- STOOD ON THE BRAKE BEFORE IT FINALLY STOPPED- BACKED UP A BIT TO STRAIGHTEN UP AND THE [XXX] THING DID IT AGAIN IN REVERSE. I'M TRAVELING BACK HOME TO ARKANSAS FROM FLORIDA IN A FEW DAYS WITH MY CHILDREN AND I'M SCARED TO DEATH TO DRIVE THIS THING. I CAN'T GET IT LOOKED AT BEFORE WE LEAVE BECAUSE OF THE WEEKEND/ CHRISTMAS BREAK.SERIOUSLY UNSAFE VEHICLE! THERE SHOULD BE RECALLS ON THESE VEHICLES! I'VE READ SO MANY SIMILAR STORIES, WHY HAS THIS NOT BEEN ADDRESSED YET? GMC SHOULD BE ASHAMED. PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

SINCE BUYING THE TRUCK NEW IN 2016 IT HAD A VIBRATION , WHICH GOT WORSE AS YOU INCREASED SPEED, AT HIGHWAY SPEED, 65-75 MPH THE VIBRATION IS SO BAD IT WAS MAKING ME NAUSEOUS. I HAVE TAKEN IT TO THE DEALER SEVERAL TIMES, FIRST BALANCED THE TIRES AND SAID EVERYTHING WAS NORMAL, TRUCK STILL VIBRATING. SEVERAL MORE TRIPS TO THE DEALER WITH THE SAME RESULT.

SINCE BUYING THE TRUCK NEW IN 2016 IT HAD A VIBRATION , WHICH GOT WORSE AS YOU INCREASED SPEED, AT HIGHWAY SPEED, 65-75 MPH THE VIBRATION IS SO BAD IT WAS MAKING ME NAUSEOUS. I HAVE TAKEN IT TO THE DEALER SEVERAL TIMES, FIRST BALANCED THE TIRES AND SAID EVERYTHING WAS NORMAL, TRUCK STILL VIBRATING. SEVERAL MORE TRIPS TO THE DEALER WITH THE SAME RESULT.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING 65 MPH IN STOP AND GO TRAFFIC, THE CONTACT DETECTED A SHUTTER AND HEARD AN ABNORMAL NOISE WHEN SHIFTING GEARS. THE VEHICLE WAS TAKEN TO MARTY'S BUICK GMC (5 KINGSTON COLLECTION WAY, KINGSTON, MA 02364, (781) 948-9098) WHERE THE TRANSMISSION WAS REPROGRAMMED AND FLUSHED. THE VEHICLE WAS THEN TAKEN TO BEST CHEVROLET (128 DERBY ST, HINGHAM, MA 02043, 866-208-7873) WHERE THE CONTACT WAS INFORMED THAT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 96,794.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING 65 MPH IN STOP AND GO TRAFFIC, THE CONTACT DETECTED A SHUTTER AND HEARD AN ABNORMAL NOISE WHEN SHIFTING GEARS. THE VEHICLE WAS TAKEN TO MARTY'S BUICK GMC (5 KINGSTON COLLECTION WAY, KINGSTON, MA 02364, (781) 948-9098) WHERE THE TRANSMISSION WAS REPROGRAMMED AND FLUSHED. THE VEHICLE WAS THEN TAKEN TO BEST CHEVROLET (128 DERBY ST, HINGHAM, MA 02043, 866-208-7873) WHERE THE CONTACT WAS INFORMED THAT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 96,794.

TRANSMISSION SHIFTS ABRUPTLY AND TORQUE CONVERTER CAUSES SHUDDER AT HIGHWAY SPEEDS. TRUCK HAS BEEN SERVICED TWICE FOR THE SAME ISSUE BY DEALER AND DEALER RECENTLY TOLD ME PROBLEM IS UNRESOLVABLE.

TRANSMISSION SHIFTS ABRUPTLY AND TORQUE CONVERTER CAUSES SHUDDER AT HIGHWAY SPEEDS. TRUCK HAS BEEN SERVICED TWICE FOR THE SAME ISSUE BY DEALER AND DEALER RECENTLY TOLD ME PROBLEM IS UNRESOLVABLE.

CONSTANT VIBRATION AND OR SHAKE AT SPEEDS BETWEEN 60-70 MPH. THIS ISSUE IS COMMONLY REFERRED TO AS THE "CHEVY SHAKE" THIS ISSUE HAS BEEN EXISTING SINCE FIRST PURCHASING THIS VEHICLE. I ADDRESSED THE CONCERN WITH THE DEALERSHIP DURING MULTIPLE VISITS FOR SERVICE. AS THIS WAS MY FIRST FULL SIZE TRUCK, I WASN'T SURE WHAT TO EXPECT REGARDING HOW THE VEHICLE WOULD RIDE AT HIGHWAY SPEEDS. I WAS TOLD BY THE SERVICE DEPARTMENT THAT THE VEHICLE WAS IN TOLERANCE IN REGARDS TO HOW IT RODE AND THE CONSTANT VIBRATION. SO I EXCEPTED THIS AS BEING THE NORM AND WENT AHEAD TO ADD SOME MODIFICATIONS TO MY TRUCK. SINCE THE INITIAL COMPLAINT THE SERVICE DEPARTMENT HAS SINCE TURNED OVER MOST OF THEIR STAFF AND ADDED PEOPLE WILLING TO ADDRESS AND ACKNOWLEDGE THAT MY VEHICLE INDEED HAS THIS VIBRATION/SHAKE ISSUE. DUE TO THE MODIFICATIONS MADE THEY WILL NOT ADDRESS OR ATTEMPT TO CORRECT THIS ISSUE. HAD I PRESSED THE ISSUE IN THE BEGINNING AND NOT ACCEPTED WHAT THESE SO CALLED PROFESSIONALS HAD TOLD ME TO BE ACCEPTABLE MAYBE I WOULDN'T BE IN THIS PREDICAMENT. MY VEHICLE HAS ALSO BEEN IN FOR NUMEROUS BUCKET SEAT ISSUES FROM SAGGING AND POOR SEAT SUPPORT. EVERYTHING DESCRIBED HERE IS FACTUAL AS I HAVE ALL THE SERVICE RECORDS AND HISTORY WITH THE SAME GMC DEALERSHIP AND SERVICE DEPARTMENT IN REGARDS TO THESE PROBLEMS. LONG STORY SHORT, THESE ISSUES HAVE MADE LONG DISTANCE TRIPS ALMOST UNBEARABLE BETWEEN THE CONSTANT SHAKING AND POOR SEAT SUPPORT.

CONSTANT VIBRATION AND OR SHAKE AT SPEEDS BETWEEN 60-70 MPH. THIS ISSUE IS COMMONLY REFERRED TO AS THE "CHEVY SHAKE" THIS ISSUE HAS BEEN EXISTING SINCE FIRST PURCHASING THIS VEHICLE. I ADDRESSED THE CONCERN WITH THE DEALERSHIP DURING MULTIPLE VISITS FOR SERVICE. AS THIS WAS MY FIRST FULL SIZE TRUCK, I WASN'T SURE WHAT TO EXPECT REGARDING HOW THE VEHICLE WOULD RIDE AT HIGHWAY SPEEDS. I WAS TOLD BY THE SERVICE DEPARTMENT THAT THE VEHICLE WAS IN TOLERANCE IN REGARDS TO HOW IT RODE AND THE CONSTANT VIBRATION. SO I EXCEPTED THIS AS BEING THE NORM AND WENT AHEAD TO ADD SOME MODIFICATIONS TO MY TRUCK. SINCE THE INITIAL COMPLAINT THE SERVICE DEPARTMENT HAS SINCE TURNED OVER MOST OF THEIR STAFF AND ADDED PEOPLE WILLING TO ADDRESS AND ACKNOWLEDGE THAT MY VEHICLE INDEED HAS THIS VIBRATION/SHAKE ISSUE. DUE TO THE MODIFICATIONS MADE THEY WILL NOT ADDRESS OR ATTEMPT TO CORRECT THIS ISSUE. HAD I PRESSED THE ISSUE IN THE BEGINNING AND NOT ACCEPTED WHAT THESE SO CALLED PROFESSIONALS HAD TOLD ME TO BE ACCEPTABLE MAYBE I WOULDN'T BE IN THIS PREDICAMENT. MY VEHICLE HAS ALSO BEEN IN FOR NUMEROUS BUCKET SEAT ISSUES FROM SAGGING AND POOR SEAT SUPPORT. EVERYTHING DESCRIBED HERE IS FACTUAL AS I HAVE ALL THE SERVICE RECORDS AND HISTORY WITH THE SAME GMC DEALERSHIP AND SERVICE DEPARTMENT IN REGARDS TO THESE PROBLEMS. LONG STORY SHORT, THESE ISSUES HAVE MADE LONG DISTANCE TRIPS ALMOST UNBEARABLE BETWEEN THE CONSTANT SHAKING AND POOR SEAT SUPPORT.

TRANSMISSION - WHEN DRIVING THE VEHICLE IT DOES A HARD SHIFT WHEN ACCELERATING AND DECELERATING. I HAVE TAKEN THE VEHICLE INTO THE DEALER TWICE. THEY ARE SAYING THAT IS A "STATE OF THE ART" COMPUTER THAT NEEDS TO BE RESET!!! I AM TAKING IT BACK IN FOR A 3RD TIME. THE CARE IS 2 YEARS OLD WITH 31K MILES.

TRANSMISSION - WHEN DRIVING THE VEHICLE IT DOES A HARD SHIFT WHEN ACCELERATING AND DECELERATING. I HAVE TAKEN THE VEHICLE INTO THE DEALER TWICE. THEY ARE SAYING THAT IS A "STATE OF THE ART" COMPUTER THAT NEEDS TO BE RESET!!! I AM TAKING IT BACK IN FOR A 3RD TIME. THE CARE IS 2 YEARS OLD WITH 31K MILES.

PLEASE MAKE GM RESOLVE THE ISSUES WITH THE 8 SPEED TRANSMISSIONS IN THE TRUCKS. 2016 SLT Z71. I PURCHASED THE TRUCK NEW. IT'S NEVER SHIFTED PROPERLY. HESITATIONS, CLUNKING, JERKING, SHUTTER, HARD DOWN SHIFTS.... EVERYTIME I TAKE IT IN, THEY SAY IT'S DUE FOR AN UPDATE. THE TRUCK HAS HAD 4 UPDATES AND NONE OF THEM HAVE FIXED A THING. I HAD IT IN BEFORE THE 36,000 MILE BUMPER TO BUMPER WARRANTY WAS UP AND WAS TOLD IT WAS UP TO DATE. THEN LAST WEEK, I TOOK IT IN AND WAS TOLD IT WAS "SEVERAL UPDATES BEHIND." (54,XXX) MILES. TO TOP IT OFF, GENERAL MOTORS WOULDN'T PAY FOR THE $400 UPDATE, WHICH DIDN'T FIX ANYTHING AT ALL!!! THE TRUCK JERKED BEFORE WE GOT A BLOCK FROM THE DEALERSHIP. GM SAYS THAT EVEN THOUGH THE TRUCK IS STILL UNDER A FACTORY 60,000 MILE POWERTRAIN WARRANTY, TRANSMISSION UPDATES AREN'T COVERED. THE 120,000 EXTENDED WARRANTY WOULDN'T COVER IT BECAUSE THEY SAY IT SHOULD BE COVERED UNDER THE FACTORY POWERTRAIN WARRANTY! I ABSOLUTELY LOVE THE TRUCK OTHER THAN THE JUNK TRANSMISSION IN IT. I DON'T THINK IT'S SAFE OR MUCH FUN HAVING A VEHICLE THAT STARTS TO GO THEN FALLS FLAT ON ITS FACE FOR A FEW SECONDS BEFORE SLAMMING INTO THE NEXT GEAR. THIS IS A MAJOR PROBLEM WITH A HUGE NUMBER OF TRUCKS. DON'T BELIEVE ME? GOOGLE "2016 SIERRA TRANSMISSION ISSUE" OR ANYTHING OF THE SORT. YOU'LL SEE. I'M REALLY NOT ASKING FOR MUCH. I DIDN'T WANT TO PUT MY FAMILY IN A POTENTIALLY UNSAFE VEHICLE.....YET HERE WE ARE. LIKE I SAID, I'M NOT ASKING FOR MUCH. ALL I WANT IS FOR MY TRUCK TO SHIFT NORMAL. TO GO WHEN IT NEEDS OR HAS TO. MY TRUCK HAS HAD 4 UPDATES AND WAS SEVERAL UPDATES BEHIND LAST TIME, THAT'S ROUGHLY AN UPDATE EVERY 10,000 MILES AND NOW THEY'RE NOT COVERED? ON TWO SEPARATE OCCASIONS, IT'S SHIFTED SO HARD THAT IT JARRED MY NECK AND MADE IT SORE FOR A FEW DAYS! IVE EVEN PULLED OVER ON THE SIDE OF THE ROAD THINKING WE WERE REAR-ENDED. SO HAS MY WIFE. NOT SAFE-NOT NECESSARY!

PLEASE MAKE GM RESOLVE THE ISSUES WITH THE 8 SPEED TRANSMISSIONS IN THE TRUCKS. 2016 SLT Z71. I PURCHASED THE TRUCK NEW. IT'S NEVER SHIFTED PROPERLY. HESITATIONS, CLUNKING, JERKING, SHUTTER, HARD DOWN SHIFTS.... EVERYTIME I TAKE IT IN, THEY SAY IT'S DUE FOR AN UPDATE. THE TRUCK HAS HAD 4 UPDATES AND NONE OF THEM HAVE FIXED A THING. I HAD IT IN BEFORE THE 36,000 MILE BUMPER TO BUMPER WARRANTY WAS UP AND WAS TOLD IT WAS UP TO DATE. THEN LAST WEEK, I TOOK IT IN AND WAS TOLD IT WAS "SEVERAL UPDATES BEHIND." (54,XXX) MILES. TO TOP IT OFF, GENERAL MOTORS WOULDN'T PAY FOR THE $400 UPDATE, WHICH DIDN'T FIX ANYTHING AT ALL!!! THE TRUCK JERKED BEFORE WE GOT A BLOCK FROM THE DEALERSHIP. GM SAYS THAT EVEN THOUGH THE TRUCK IS STILL UNDER A FACTORY 60,000 MILE POWERTRAIN WARRANTY, TRANSMISSION UPDATES AREN'T COVERED. THE 120,000 EXTENDED WARRANTY WOULDN'T COVER IT BECAUSE THEY SAY IT SHOULD BE COVERED UNDER THE FACTORY POWERTRAIN WARRANTY! I ABSOLUTELY LOVE THE TRUCK OTHER THAN THE JUNK TRANSMISSION IN IT. I DON'T THINK IT'S SAFE OR MUCH FUN HAVING A VEHICLE THAT STARTS TO GO THEN FALLS FLAT ON ITS FACE FOR A FEW SECONDS BEFORE SLAMMING INTO THE NEXT GEAR. THIS IS A MAJOR PROBLEM WITH A HUGE NUMBER OF TRUCKS. DON'T BELIEVE ME? GOOGLE "2016 SIERRA TRANSMISSION ISSUE" OR ANYTHING OF THE SORT. YOU'LL SEE. I'M REALLY NOT ASKING FOR MUCH. I DIDN'T WANT TO PUT MY FAMILY IN A POTENTIALLY UNSAFE VEHICLE.....YET HERE WE ARE. LIKE I SAID, I'M NOT ASKING FOR MUCH. ALL I WANT IS FOR MY TRUCK TO SHIFT NORMAL. TO GO WHEN IT NEEDS OR HAS TO. MY TRUCK HAS HAD 4 UPDATES AND WAS SEVERAL UPDATES BEHIND LAST TIME, THAT'S ROUGHLY AN UPDATE EVERY 10,000 MILES AND NOW THEY'RE NOT COVERED? ON TWO SEPARATE OCCASIONS, IT'S SHIFTED SO HARD THAT IT JARRED MY NECK AND MADE IT SORE FOR A FEW DAYS! IVE EVEN PULLED OVER ON THE SIDE OF THE ROAD THINKING WE WERE REAR-ENDED. SO HAS MY WIFE. NOT SAFE-NOT NECESSARY!

ON TWO SEPARATE OCCURRENCES, W/ FAMILY IN THE VEHICLE, STARTING SPEED AT APPROX. 35MPH, THE ACCELERATOR (GAS PEDAL) STUCK TO THE FLOOR DURING THE PROCESS OF PASSING ANOTHER VEHICLE DURING CITY STREET DRIVING. TOP SPEED GOT TO APPROX. 55MPH, W/ STOP LIGHTS FAST APPROACHING. THE PEDAL SIMPLY WOULD NOT RELEASE FROM FULL THROTTLE UNTIL AFTER THE VEHICLE FINALLY CAME TO COMPLETE STOP WITH BRAKES APPLIED, SHIFTER TO NEUTRAL POSITION, SLAMMING THE SHIFTER TO PARK, AND IGNITION WAS TURNED OFF! HAD TO TAKE IMMEDIATE AND DECISIVE EMERGENCY ACTIONS DURING BOTH SITUATIONS! THE FIRST TIME IT OCCURRED, THOUGHT PERHAPS THE RUBBER FLOOR MAT MAY HAVE CONTRIBUTED TO THIS EVENT; HOWEVER, DRIVER SIDE FLOOR MAT WAS IMMEDIATELY REMOVED. SEVERAL DAYS LATER, DURING SIMILAR OPERATIONS, THE ACCELERATOR (GAS PEDAL) AGAIN STUCK TO THE FLOOR BOARD IN FULL ACCELERATION MODE W/ FAMILY IN THE VEHICLE! CURRENTLY HAVE APPOINTMENT SET-UP AT A HUNTSVILLE, AL. GMC DEALERSHIP. THIS TRUCK WAS PURCHASED BRAND NEW AT LAURA BUICK IN COLLINSVILLE, IL. ALTHOUGH I REALIZE THERE ARE OTHER GMC CUSTOMERS; NOT SURE WHY THIS HUNTSVILLE, AL DEALERSHIP WOULD NOT WORK ME IN SOONER. THIS VEHICLE HAS APPROX. 49K MILES AND SHOULD STILL HAVE WARRANTY REMAINING UNTIL 68K MILES. GMC SERVICE DEPARTMENT REP. STATED, "MONDAY 26, FEBRUARY IS FIRST DATE AVAILABLE."

ON TWO SEPARATE OCCURRENCES, W/ FAMILY IN THE VEHICLE, STARTING SPEED AT APPROX. 35MPH, THE ACCELERATOR (GAS PEDAL) STUCK TO THE FLOOR DURING THE PROCESS OF PASSING ANOTHER VEHICLE DURING CITY STREET DRIVING. TOP SPEED GOT TO APPROX. 55MPH, W/ STOP LIGHTS FAST APPROACHING. THE PEDAL SIMPLY WOULD NOT RELEASE FROM FULL THROTTLE UNTIL AFTER THE VEHICLE FINALLY CAME TO COMPLETE STOP WITH BRAKES APPLIED, SHIFTER TO NEUTRAL POSITION, SLAMMING THE SHIFTER TO PARK, AND IGNITION WAS TURNED OFF! HAD TO TAKE IMMEDIATE AND DECISIVE EMERGENCY ACTIONS DURING BOTH SITUATIONS! THE FIRST TIME IT OCCURRED, THOUGHT PERHAPS THE RUBBER FLOOR MAT MAY HAVE CONTRIBUTED TO THIS EVENT; HOWEVER, DRIVER SIDE FLOOR MAT WAS IMMEDIATELY REMOVED. SEVERAL DAYS LATER, DURING SIMILAR OPERATIONS, THE ACCELERATOR (GAS PEDAL) AGAIN STUCK TO THE FLOOR BOARD IN FULL ACCELERATION MODE W/ FAMILY IN THE VEHICLE! CURRENTLY HAVE APPOINTMENT SET-UP AT A HUNTSVILLE, AL. GMC DEALERSHIP. THIS TRUCK WAS PURCHASED BRAND NEW AT LAURA BUICK IN COLLINSVILLE, IL. ALTHOUGH I REALIZE THERE ARE OTHER GMC CUSTOMERS; NOT SURE WHY THIS HUNTSVILLE, AL DEALERSHIP WOULD NOT WORK ME IN SOONER. THIS VEHICLE HAS APPROX. 49K MILES AND SHOULD STILL HAVE WARRANTY REMAINING UNTIL 68K MILES. GMC SERVICE DEPARTMENT REP. STATED, "MONDAY 26, FEBRUARY IS FIRST DATE AVAILABLE."

8 SPEED TRANSMISSION BUCKS, HESITATES, LURCHES FORWARD, CLUNKS, WHILE IN DRIVE. THE CONTINENTAL TIRES ARE CUPPING, WHICH GM SAYS IS CHARACTERISTIC OF THE BRAND. THE TRUCK VIBRATES WHILE AT 25MPH, AROUND 50MPHM AND 65-75MPH. WHILE IN AWD/4WD AT 30 AND 50MPH, THE DRIVELINE MAKES A WHINING NOISE AND VIBRATES SOMETIMES.

8 SPEED TRANSMISSION BUCKS, HESITATES, LURCHES FORWARD, CLUNKS, WHILE IN DRIVE. THE CONTINENTAL TIRES ARE CUPPING, WHICH GM SAYS IS CHARACTERISTIC OF THE BRAND. THE TRUCK VIBRATES WHILE AT 25MPH, AROUND 50MPHM AND 65-75MPH. WHILE IN AWD/4WD AT 30 AND 50MPH, THE DRIVELINE MAKES A WHINING NOISE AND VIBRATES SOMETIMES.

GM 8 SPEED TRANSMISSION IS FULL OF PROBLEM. IT CONSTANTLY HESITATES, HANG GEARS, BUCKS, AND POSES VARIOUS SAFETY CONCERNS. FOR INSTANCE IF MERGING ONTO THE HIGHWAY THE TRANSMISSION WILL HESITATE AND THE TRUCK WILL BE UNRESPONSIVE TO GAS PEDAL INPUT FOR A PERIOD OF TIME SOMETIMES UP TO 12 SECS. THIS HESITATION CAUSES A SAFETY CONCERN WHEN ATTEMPTING TO MERGE INTO TRAFFIC. GM ACKNOWLEDGES THESE CONCERNS BUT STATES THAT IT IS OPERATING AS DESIGNED BUT ARE WORKING ON SOFTWARE UPDATES TO IMPROVE TRANSMISSION PERFORMANCE. THIS HAS BEEN A CONSTANT ISSUE SINCE I PURCHASED THE TRUCK.

GM 8 SPEED TRANSMISSION IS FULL OF PROBLEM. IT CONSTANTLY HESITATES, HANG GEARS, BUCKS, AND POSES VARIOUS SAFETY CONCERNS. FOR INSTANCE IF MERGING ONTO THE HIGHWAY THE TRANSMISSION WILL HESITATE AND THE TRUCK WILL BE UNRESPONSIVE TO GAS PEDAL INPUT FOR A PERIOD OF TIME SOMETIMES UP TO 12 SECS. THIS HESITATION CAUSES A SAFETY CONCERN WHEN ATTEMPTING TO MERGE INTO TRAFFIC. GM ACKNOWLEDGES THESE CONCERNS BUT STATES THAT IT IS OPERATING AS DESIGNED BUT ARE WORKING ON SOFTWARE UPDATES TO IMPROVE TRANSMISSION PERFORMANCE. THIS HAS BEEN A CONSTANT ISSUE SINCE I PURCHASED THE TRUCK.

PERIODICALLY 3 TIMES A WEEK, WHILE DRIVING, THE STABILIZTRAK ILLUMINATES AND DRIVABILITY DECLINES, ENGINE CHECK LIGHT ILLUMS, THE GEAR REMAINS IN A LOW GEAR WITHOUT SHIFTING. TURN THE IGNITION OFF FOR A COUPLE SECONDS AND IT CLEARS AND THE ENGINE LIGHT GOES OUT AFTER 25-35 MILES. SOMETIME IT DOESN'T RESET AFTER 3 ATTEMPTS OF TURNING OFF AND ON THE IGNITION. THE CODES ARE P0700 A U0100 WITH OTHERS WHEN DEALERSHIP ANALYZED. THREE TIMES IT WAS IN THE GMC SHOP AND THREE TIMES GIVING BACK AND PROBLEM STILL EXISTED. I RECORDED ON VIDEO AND GAVE IT TO THE DEALERSHIP AS PROOF.

PERIODICALLY 3 TIMES A WEEK, WHILE DRIVING, THE STABILIZTRAK ILLUMINATES AND DRIVABILITY DECLINES, ENGINE CHECK LIGHT ILLUMS, THE GEAR REMAINS IN A LOW GEAR WITHOUT SHIFTING. TURN THE IGNITION OFF FOR A COUPLE SECONDS AND IT CLEARS AND THE ENGINE LIGHT GOES OUT AFTER 25-35 MILES. SOMETIME IT DOESN'T RESET AFTER 3 ATTEMPTS OF TURNING OFF AND ON THE IGNITION. THE CODES ARE P0700 A U0100 WITH OTHERS WHEN DEALERSHIP ANALYZED. THREE TIMES IT WAS IN THE GMC SHOP AND THREE TIMES GIVING BACK AND PROBLEM STILL EXISTED. I RECORDED ON VIDEO AND GAVE IT TO THE DEALERSHIP AS PROOF.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHEN THE SHIFTER WAS ENGAGED, THE VEHICLE DID NOT REGISTER THE CORRECT GEAR AND FAILED TO MOVE. WHEN THE VEHICLE DID RECOGNIZE THE CORRECT GEAR, IT ACCELERATED UNINTENTIONALLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION WAS DEFECTIVE AND PARTS IN THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS RETURNED TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 150. UPDATED 10/18/16*LJ *TR

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHEN THE SHIFTER WAS ENGAGED, THE VEHICLE DID NOT REGISTER THE CORRECT GEAR AND FAILED TO MOVE. WHEN THE VEHICLE DID RECOGNIZE THE CORRECT GEAR, IT ACCELERATED UNINTENTIONALLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION WAS DEFECTIVE AND PARTS IN THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS RETURNED TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 150. UPDATED 10/18/16*LJ *TR

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

VEHICLE SHAKES & VIBRATES AT SPEED I & OTHER OWNERS ARE REPORTING THAT CONDITION LEADS TO HEADACHES, DIZZINESS, AND NAUSEA. THIS TRUCK IS A REPLACEMENT FOR A 2014 THAT EXHIBITED SAME ISSUES. 2014 WAS TRADED FOR 2016 WITH $$ ASSISTANCE FROM GM WHEN THEY DID ADMIT THERE WAS NO FIX FOR VIBRATION ISSUES. APPARENTLY VIBRATION ISSUES AFFECT 2014, 2015, AND NOW 2016 MODELS. DEALERS ARE FLOODED WITH COMPLAINTS AND VEHICLES IN FOR REPAIR, BUT THERE IS NO REPAIR AVAILABLE. GM IS QUIETLY DOING BUY BACKS OR OFFERING TRADE ASSISTANCE. MY 2016 IS CURRENTLY IN THE SHOP. GM FACTORY REPS HAVE CONFIRMED THAT MY TRUCK DOES SUFFER VIBRATION ISSUES. THIS ISSUE ALSO AFFECTS THE CHEVY SILVERADO, CHEVY TAHOE, AND GMC YUKON. THIS IS WHAT GM BUILT WITH TAX PAYER MONEY! I HAVE DETAILED SERVICE REPORTS FOR 2014 TRUCK AS WELL AS CORRESPONDENCE FROM GM

VEHICLE SHAKES & VIBRATES AT SPEED I & OTHER OWNERS ARE REPORTING THAT CONDITION LEADS TO HEADACHES, DIZZINESS, AND NAUSEA. THIS TRUCK IS A REPLACEMENT FOR A 2014 THAT EXHIBITED SAME ISSUES. 2014 WAS TRADED FOR 2016 WITH $$ ASSISTANCE FROM GM WHEN THEY DID ADMIT THERE WAS NO FIX FOR VIBRATION ISSUES. APPARENTLY VIBRATION ISSUES AFFECT 2014, 2015, AND NOW 2016 MODELS. DEALERS ARE FLOODED WITH COMPLAINTS AND VEHICLES IN FOR REPAIR, BUT THERE IS NO REPAIR AVAILABLE. GM IS QUIETLY DOING BUY BACKS OR OFFERING TRADE ASSISTANCE. MY 2016 IS CURRENTLY IN THE SHOP. GM FACTORY REPS HAVE CONFIRMED THAT MY TRUCK DOES SUFFER VIBRATION ISSUES. THIS ISSUE ALSO AFFECTS THE CHEVY SILVERADO, CHEVY TAHOE, AND GMC YUKON. THIS IS WHAT GM BUILT WITH TAX PAYER MONEY! I HAVE DETAILED SERVICE REPORTS FOR 2014 TRUCK AS WELL AS CORRESPONDENCE FROM GM