2024 CHEVROLET SILVERADO 1500 Power Train Problems

Engine safety concern. Grinding and clunking while engine is running and gets worse under load or when accelerating. Have taken into dealer for service over 6 times. Recall service was performed and their fix was to change to a thicker oil but all that caused was worse fuel economy, more expensive oil changes, and the noises have become worse. Going back to dealer next week for another attempt. Have requested lemon replacement with GM but they are denying any issue.

Transmission pauses from 1st and 2nd gear. Causing to have no acceleration from a stop. Can cause safety issue to accelerate while pulling in front of traffic. Truck has been to the dealer. Dealer says no codes triggered but the pausing still persists and is only getting worse. Truck has been doing it since around 30,000 miles. Truck currently has 36,760 miles.

Truck was purchased Aug 2024 During first few months, I felt a shudder/vibration when either holding speed and/or slightly accelerating between 30-45 mph, usually at 1100-1300 RPM. Current Odometer 33,995 In the last month the truck has began to vibrate worse. I have a "Rumblestrip" feeling when at the same speeds. More noticeable on surface roads when following behind traffic at 30-45 mph. Generally the shudder is felt at approx. 1100-1300 RPM. Took the truck to the dealer yesterday, and they performed a quick roadtest. Service Tech was able to feel the rumble strip shudder multiple times, however their diagnostic tool only indicated a TCC Slip 2 times during a 20 min drive. The shudder/vibration happens when in "D". It is not present in "L9", or in "Tow Mode". The shudder feels worse in 4WD. If the shudder/vibration is happening, I am able to hold the speed and RPM at the current spot, the sensation is continuous and does not go away unless I accelerate or decelerate. I tend to feel it more when on an incline, and decelerating. As or right now the data has been sent to GM for diagnostic viewing. Found multiple TSB for issue with 2500/3500 models, and 1500 models from prior years. L84 Engine - 2024 Silverado 1500 RST

hard/delayed shifting, slipping, shuddering , like rumble strips at certain speeds. Jerking, bucking, or significant delays when shifting gears. Shuddering/Vibration: A feeling like driving over rumble strips, especially at certain speeds and when warm

For the first time I purchased a brand new vehicle off a dealership lot…What a mistake. While the dealership itself was an awful experience I thought it was worth it for a Chevy Silverado. After all my previous one was so reliable. WRONG. The first issue I found was I was unable to shift into reverse to back out of the driveway of a fire station I volunteer at. After driving forward a couple times and shutting the vehicle off and shifting multiple times I had to be towed out in reverse. I was able to drive home but the transmissions slipped once and the vehicle slowed abruptly. The check engine light was now on. I dropped the vehicle off at the dealership over the weekend and on Monday they called and informed me the 2024 Silverado misfired once and nothing was wrong with the transmission. There was nothing they could do. About two months later I was driving to work as a career firefighter/paramedic when my vehicles check engine light came on and a message informed me that I was in “reduced acceleration mode”. I slowly and carefully made my way to work and brought the truck to the dealership after my shift. The check engine light was now on again. They informed me later that day that I had a faulty valve body in my transmission. They “unfortunately” could not give me a completion date on my repair as they had no ETA for the replacement part. It appears the part is in high demand. This makes sense as a quick google search shows this is a widely known issue with the 10 speed transmission. So far I have been unable to get a rental vehicle between the dealership and GM. Aside from my house my 2024 Silverado is the largest purchase of my life. And at 15,000 miles I am without it for the foreseeable future. As a first responder the communities I serve depend on me to respond from home at any hour. My family and I are living in a DIY renovation while also starting a farm business. I need a dependable vehicle and regret spending $53,000 on a new vehicle. I have more to say.

Hairline crack developed on the transmission cooling line at the connection of the thermal bypass block. After looking up it seems to be common. Yes, there have been user-reported issues with transmission cooler lines leaking or cracking on 2024 Chevrolet Silverado models equipped with the 3.0L Duramax diesel engine, including at or near the thermal bypass block connection. These reports primarily come from owner forums and appear to affect a subset of vehicles, often discovered during routine maintenance or after noticing fluid spots under the truck. Symptoms can include hard shifting, fluid seepage on the undercarriage, or low transmission fluid levels, with some cases progressing to require towing if not addressed early. For instance, multiple owners of 2024 Silverado 1500 models (including ZR2 trims with the LZ0 3.0L Duramax) have described leaks originating from the cooling line block or thermal bypass area next to the oil filter, sometimes involving hairline cracks in the lines themselves.  In one detailed account, a 2024 model with around 35,000 miles experienced fluid leaking from the cooling line block, leading to replacement of seals and the entire line assembly due to cracking discovered after initial repairs.  Similar problems have been noted on closely related 2023 models, where leaks at the thermal bypass valve necessitated replacing the valve, O-rings, and all cooler lines, with some users reporting hairline cracks as the root cause.  Parts like the lines have been on backorder in some cases, causing repair delays, and resolutions are typically covered under warranty (e.g., powertrain coverage up to 100,000 miles), though repeated visits to dealerships are common. These issues seem tied to the 10L80 10-speed transmission paired with the 3.0L Duramax, where the thermal bypass valve can contribute to overheating or fluid flow problems if faulty, potentially exacerbating line wear

The coolant control valve and the transmission control module are having to be replaced on thousands of Silverado 1500s from 2022 to 2025. Both parts have been updated, but there is no recall and many people are being left stranded due to this. Mine has not currently failed, but I am older and really don’t want to get stranded due to a known issue. Why wouldn’t they have been forced to do a recall General Motors should be replacing these as a preemptive precaution.

Complaint Description On Tuesday October 28th, 2025 while driving to work, my 2024 Chevy Silverado LTZ suddenly went into limp mode during normal driving. The truck would not go into reverse at all. I had to use OnStar to call a tow from my residence because the vehicle was not safe or able to be operated. The truck has been at the Chevrolet dealership since that day and as of today (November 7th) it still has not been repaired. The service department confirmed it is a failed transmission valve body. Research shows this is a recurring and known issue on many GM trucks and GM does not appear to have a permanent fix yet. Component/System that failed: Transmission Valve Body failure. Component is currently located at the GM dealership and is available for inspection. Safety Risk: This failure caused sudden limp mode, loss of power, and inability to reverse while in active traffic. This put my safety and potentially other drivers at risk due to sudden unexpected deceleration and inability to maneuver safely. Problem Confirmed: Yes. Confirmed by GM dealership service technicians. Inspection: The vehicle is currently at the GM dealership. No manufacturer field rep, insurance, or police inspection has occurred yet. Warnings / Codes Present: The failure occurred without prior early signs that morning. When it failed, OnStar diagnostics reported: P2732: Transmission System — “Engine and Transmission System not performing as expected.” P0700: Transmission Control Module requested Malfunction Indicator Lamp illumination. Emissions related DTC set in the Transmission Control Module. Both codes triggered at the time limp mode activated. Best Assessment: This appears to be an ongoing recurring GM transmission valve body issue affecting newer GM trucks. The failure caused a sudden loss of drive capability and is a safety hazard that requires NHTSA investigation.

8 Speed Transmission without any warning, started shaking and clunking and slipping while doing 55mph in traffic causing sudden loss of momentum. 8 speed transmission failure. Dealership says bad transmission control module and won’t inspect internal components. Chevy is still playing games with people with their defective 8 speed transmissions. They have not fixed all of their previous problems

Truck did not have reverse. Service engine came on after going forward and possible loud shudder like going over a pot hole. Not sure if it was a pot hole or transmission. Dealer fixed the valve body in Transmission after 1 week.

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, there was an abnormal burning odor entering the cabin of the vehicle, and the rear windshield shattered, with white smoke entering the vehicle. The transmission and engine warning lights were illuminated. In addition, several unknown messages were displayed on the instrument panel. The contact pulled over to the shoulder of the road and the vehicle was towed to a local dealer for further investigation. Prior to the failure, the vehicle was taken to the same local dealer where the OS Sensor was replaced. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 23,000.

Mileage: 23,000

Vehicle defect appears related to recall but dealership is unable to identify without tear down of engine. Previous dealership when first reported non responsive. Manufacturer refusing to further fix and or resolve outstanding safety issue of major safety concern.

Component: Faulty "Coolant Control Valve" causing reduced acceleration, and check engine light. Fan is constantly on. Safety: Can overheat, reduced acceleration can cause accident. Problem reproduced: Dealer did check/confirm codes and errors Warning Messages: No warning or messages prior.

Experience hard shifting into park from a stopped position a week or more prior to incident. While driving, several hard shifts were experienced which resulted in the vehicle unable to surpass 30 MPH. CEL illuminated displaying codes: P0747 and P0700. Suspected transmission Valve Body issue. Vehicle was towed to dealership that it was purchased from.

Component/System Failed: Power Train – specifically, the #6 lifter failed and is available for inspection upon request. Safety Risk: The failure caused noticeable engine misfiring, loss of power, and abnormal ticking sounds, which could potentially lead to engine stalling while driving. This creates a serious safety risk, especially during highway driving or merging situations. Confirmation of Problem: The issue was confirmed by a certified GM dealership technician, who diagnosed the failure of the #6 lifter. They advised that the lifter and potentially the camshaft need replacement. Inspection: The vehicle has been inspected by the dealership service department. No inspection has been conducted by police or insurance at this time. Warning Signs: Prior to failure, there were no warning lamps. However, the vehicle began exhibiting a noticeable ticking noise followed by rough idling and reduced performance approximately 71,000 miles.

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated while driving 91 MPH, the vehicle was shaking erratically. No warning light was illuminated. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact was informed that it might take a week to complete the diagnostic testing. In addition, the contact stated while driving at an undisclosed speed, the tailgate independently unlatched. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact was informed that the tailgate switch would be replaced, however the part was on order. The contact stated that the tailgate switch was not replaced. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. In addition, the contact stated that the failure was intermittent but had occurred four times. The contact stated that tools and other items were lost because of the failure. In addition, the contact stated that on one occasion the tailgate independently unlatched, and the tailgate almost struck the vehicle behind the contact's vehicle. The contact stated that the vehicle was taken to several different dealers because of the persistent failures. The manufacturer was not made aware of the failure. The failure mileage was approximately 1,900.

Mileage: 1,900

Lost the high gears on the interstate. Had keep it under 60 to keep RPMs under 4000

Valve body needs to be replaced. The truck is still under warranty. I have taken it to the dealership, they ordered the part and told me it was safe to drive in limp mode. I've since been waiting a month for the part to come in without a replacement vehicle. I can't drive to work and am losing quite a bit of business. There is a valve body in stock 97 miles away and GM will not ship it to my local dealer or help me in any way. The truck will not make it 97 miles for the repair. The check engine light stays on for a few days and goes off. I can only drive about 10 miles before it goes into limp mode and the dash will tell me I have reduced acceleration and to drive safely. As far as the safety of me and others UNKNOWN. The dealer has confirmed there is an issue but insists I continue to drive it even though I'm damaging the transmission.

New police vehicle on the road for only two months with only 6030 miles on it. Check engine light came on vehicle lost all power, no reverse, transmission would not shift. Warning came up about decreased acceleration. Managed to get vehicle to dealer, computer scanning stated that transmission valve body failed.

My Silverado has what seems to be a known issue with recent model Silverados which is a broken/blown valve body at the transmission. The week of the failure, my truck began having rough shifting from first to second gear first thing in the morning, but would be fine after that. Two days later this progressed to all of the gears and nearly stranded me and my kids on the interstate due to not being able to maintain speed. I got the truck to the dealership where they looked up diagnosis code and told me it was the valve body and it would require replacing. Unfortunately, the part is on national backorder with unknown delivery time. Looking online, it seems this is a known issue and parts seems to be months (6+) behind. I am stuck paying for a rental car that GM says I will get reimbursed for, but we will see. To complete the questions above, I did not notice any warning lights or notices until it failed.

When in Normal Drive mode, an unexpected or accidental bump of the Transmission T-Handle shifter between the seats towards rear of vehicle while at a stop sign or parking lot, etc. will "Lock The Transmission in Low Gear 1 out of 10 available gears". If one pulls out into traffic without noticing this event, the engine will approach redline without shifting into the next gear until the situation is acknowledged and the T-Handle is one again pulled back to reset it into automatic drive mode. This is frustrating and potentially dangerous if the situation is not recognized quickly. I suppose engine damage could be at risk. There is "No save the engine by automatically selecting the next gear if this condition happens. There is also no lockout requiring the T-Handle Shift Button on the side requiring to be pushed to acknowledge the desire to set this mode". I tested similar settings on Honda Pilot and it DOES UPSHIFT even if in this manual mode to protect engine and occupants from this difficult situation. I personally will no longer allow any others to drive my truck until this situation is remedied. It appears to be dangerous to me and my truck for those who have no idea this can occur. Please try it for yourself. Vehicle must be similar to 2024 Silverado High Country w T-Handle shifter between the seats. My hope is an over the air update can remedy this situation.

Pulled into parking lot and went into a store. Upon leaving I noticed the vehicle would not back up when placed into reverse gear. The engine would rev but, no movement. I pushed the vehicle backwards and then restarted it. The vehicle would move forward. I stopped and attempted to try the reverse gear a few more times with no luck. As I started driving on the main roadway toward the GM dealership, the vehicle upshifted once and then displayed a warning along with e check engine light. Once at the dealership, they scanned the vehicle and confirmed a transmission issue. The vehicle never showed any symptoms prior to the failure.

I got my new 2024 Chevy Silverado 2.7l turbomax custom 6 months ago. It shifts weird the first few times from a cold start. I have asked the salesman and he said yeah you have to let the truck warm up for 5 min or so. But even in doing so it still happens, worse the colder out it is. Yesterday I went to grab some food and went to take off onto the main road and when it tried to shift from first to second it felt like the transmission just stopped working for a few seconds then hit 2nd gear hard. I was told this was because the truck needs to get used to the way I drive it. Which I now have close to 4,000 miles on it and it still happens almost every time I shut the truck off and it cools down to ambient temperature. I know this is not normal, and a big safety concern because when I do go to pull out and this happens it feels like a total loss of power and does not take off like it should. I have yet to bring it into the dealership. But I have called about the issue and was told this is normal and would go away. Which it has not. So I am going to make a appointment to get it in the shop. I have also read that many others are having this same exact issue. In which case some people are saying they told them the same thing “that it’s normal”, I have heard others say they will change transmission fluid because the fluid they used is to thick, and have heard of others who had to have them change out the control module for the transmission and or reset it. I am just worried that I’m going to pull out on day and have this happen and get hit from the rear because I don’t have the power I should have to take off properly. Not to mention I should not have to let my car idle for 5-10 min before I can drive it. That’s a huge waste of gas, and time, plus having your direct injection idle makes a ton of carbon build up in the engine. I am not a certified technician but I have been working on my own vehicles for over 20 years now. So a brand new truck should not be doing this.

I had a engine failure in my 2024 Chevy Silverrado Trail Boss1500. I had just exited off the highway and came to a complete stop at the stoplight. When the light turned green, I hit the gas pedal and I did not move. I looked down at my gear shifter and noticed the truck was in park (I did not shift the truck into park). I tried to put the truck into drive and realized the engine was not running. I tried starting the truck and it would not start. The truck would crank, but would not start up. I tried this several times with no luck getting truck started. I even tried to put the truck in neutral to get the truck out of the middle of the road and could not get it neutral to move it. I called chevy roadside to tow it to the dealer. The dealership called me on tuesday and said the engine had blown because of a bearing failure and engine needs replaced. Also, they have not let me know approx time I will get my truck back. They claim there's a shortages of engines on the 6.2 liter engine.

Truck has 7000 miles defective valve body failure would not go into reverse and in limp went to dealership and diagnosis is needs valve body replacement with parts on back order with no eta. They said it could be 3-5 months. This is a national issue I’m on multiple social media sites for Chevy trail boss and there is too many to count and it’s been happening since 2021. GM has been no help no loaners and you have to pay for a rental for 3-5 months and pay your truck payments and hopes you are reimbursed at the end. They just recalled the 2021-2022 same 10spd transmissions they are selling Trucks knowing these issues exist also the lifter issues with total engine failures at 10000 miles. The transmission lock up at high speeds.

the transmission slips into neutral when in drive or reverse. yes dealer states it the valve body on transmission part not available called general motors and they state looking to get part can not tell us how long this is on a brand new chevy silverrado 4WD 2024.

While driving my vehicle on the highway I was exiting when I looked down at the instrument panel it stated a message along the lines of shifting to neutral and to press the ignition to restart engine. I noticed the vehicle wasn’t accelerating when attempting so I slowed down and did what it instructed me to do. The engine then wouldn’t start, I was uneasy because cars were coming from behind at a decent speed because of morning traffic. I somehow managed to get it to crank and took it to the dealer right away. They stated it was from low voltage and were replacing the battery under warranty. I didn’t think that was the cause but gave them the benefit of the doubt. 2 weeks later while taking my family out, the same incident happened. I wasn’t able to get it to crank and had to get it towed to the dealer. They stated it was the engine because now the engine was making a loud sound when ignited. It is about to be 4 weeks without vehicle and no repair has been made due to no inventory on engines.

Was pulling out onto the road from sitting at a traffic light, vehicle was going less than 25mph when the engine made a clunk trying to shift and the check engine light came on. Computer software indicated “limp mode with reduced acceleration activated.” Vehicle wouldn’t accelerate above 35mph, had to drive on major highway to get to dealership. Truck is only used as commuter vehicle hasn’t towed anything. Dealership indicated valve body transmission failed with vehicle only have 9k miles on it. Part is on back order as it is being manufactured due to installed faulty part, problem has been going on in 2023/2024 Chevy and gmc trucks since January 2024 without a recall put in place. Problem is being fixed after the part fails and the truck fails to run at optimal valves. According to forums software update were installed versus recalls to the actually valve body part being. I was sold a truck in sept 2024 with a faulty installed part versus it being fixed before it was purchased. This caused me to be stranded 1500 miles away from my home and we were not made aware of the know valve body transmission issue. The information was covered up versus being disclosed.

Truck went into second gear unexpectedly at 50 mph due to what dealer said was a bad solenoid. GM has had the truck for over a month with no date of an times repair due to no parts being available

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated while driving at approximately 35 MPH, the vehicle started losing motive power. The contact stated that the accelerator pedal was depressed; however, the vehicle failed to respond as needed and then stalled. The contact stated there was no warning light illuminated. The contact had the vehicle towed to a local dealer who was unable to duplicate the failure. The vehicle was not repaired. The contact stated that the failure reoccurred. The contact stated that the check engine, 4WD system, and transmission warning lights were illuminated. The contact had the vehicle towed back to the same dealer who diagnosed the vehicle and determined that the transmission valve body needed to be replaced. The dealer informed the contact that the part needed for the repair was on a national backorder. The manufacturer was informed of the failure. The failure mileage was 11,082.

Mileage: 11,082

Vehicle has left me stranded multiple times, once over 2000 miles from home at only 26k miles on the vehicle with catastrophic engine emissions and electrical failures. Costing me thousands in lodging and months of my time. My vehicle has stalled multiple times on interstates and busy roads with no shoulders putting me and other drivers at risk.

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed, the transmission shuddered and the vehicle hesitated. Additionally, the contact stated that the transmission vibrated, and the vehicle jerked forward. The contact stated that while parking in a parking lot, the vehicle jerked forward and crashed into an accessible parking sign, causing a dent in the front bumper. The vehicle was taken to the dealer; however, the failure was not duplicated. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 1,600.

Mileage: 1,600

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that upon starting the vehicle and shifting into drive(D) or reverse(R), the vehicle failed to respond. There was no warning light illuminated. The vehicle was towed to the dealer, where it was diagnosed that a transmission valve needed to be replaced; however, the part was not available. The contact continued to drive the vehicle. The contact stated that the failure recurred. Additionally, the contact stated while her son was driving at an undisclosed speed and was accelerating, the accelerator pedal traveled down and remained stuck, causing the vehicle to accelerate unintendedly to 50 MPH. The brake pedal was depressed but failed to respond. A message advising to decelerate and to drive safely was displayed. The vehicle jerked while downshifting to low gear. The contact's son shifted to neutral(N), and the accelerator pedal was no longer stuck. The contact's son was able to pull over to the side of the road. The contact's son resumed driving; however, the failure recurred while driving. The contact's son was able to drive to the residence. The vehicle was towed to the dealer, where the transmission valve, six seals, bolts, and unknown parts were replaced. The vehicle was repaired; however, the contact stated that she did not feel safe driving the vehicle. The contact was in the process of trading in the vehicle. The manufacturer was notified of the failure and covered the repair under warranty. The failure mileage was 6,893.

Mileage: 6,893

My truck had a check engine light come on for the transmission 2 months ago and then it went off before it was serviced. They said they couldn’t do anything since the light went off. Then last week I didn’t have reverse and it wouldn’t shift into gear. A week after it had been in the shop they told me the transmission valve body needs to be replaced. Expected date for parts to arrive is 3-10.

Valve Body failure at 5,500 miles. Transmission wouldn't engage in reverse. Truck went into limp mode with a reduce speed message. Valve Body is on back order for 7-8 months. The dealership decided to order a new transmission. Ive been waiting almost two months for the transmission to arrive.

Date of purchase [XXX]. Date of incident [XXX]. I was on my way to work at [XXX] and it was raining . Truck would not accelerate more than 45 miles an hour speed limit is 65 on the freeway. Engine light turned on and all the dashboard icons turned on. Drove it to the nearest dealership Tom Bell Chevrolet in Redlands Ca. Once I put vehicle in park it would not start. The message on the dashboard board displayed something like unable to access. So I went to see if service center open since it was [XXX]. He instructed me to drive around I said it will be not go into motion. After 15 minutes I checked the status on my phone and it did not display anything wrong so I went ahead and turned it on and drove it to the service center but once again it would not accelerate and shock vigorously. Once in the service line it turned off and did not stay on. Dealership ran diagnostics he mentioned cylinder and piston but they need to run more test. He called me back 2/14/25 asked if I had taken it to the dealership where I bought since purchased I said no it’s brand new, it looks tampered with . Called me back again and said this vehicle had a motor recall and a technician at Riverside Chevy worked on it and all the components are not connected we can work on it it need to go back to them and they need to explain what is wrong. He sent them a video of the tech looking at everything that was wrong. Truck was towed to Riverside Chevrolet [XXX]. This is a brand new vehicle that only had 17 miles when purchased by me ,at the moment it has 709 miles non of the components of this vehicle are new anymore they are either melted or rattling inside ,the gas tank sounded like empty cans rolling around, the transmission would not make the vehicle move. It is called lean mode if I’m being correct the vehicle was protecting it self from what I don’t know, so yes I feel it is unsafe and would like your help with this vehicle matter at your earliest possible conve INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5

2024 Chevrolet Silverado 1500 Trail Boss While driving, I was given no notice to the vehicle shutting down, couldn't go forward nor backwards. Barely got off the road, waited hours on rollback. Dealership ran a test, said "control valve body " problem. Part is ordered, on back order. GM - taking software to attempt to monitor when? this problem is going to occur? They know about excessive wear, Why not Re-Engingeer this problem instead of selling vehicles that no one knows when this problem of stopping on the road will occur. That would be a safety issue. A hazardous issue of driving on the road and not know when this would happen. If the vehicle doesn't stop from GM software, the rear wheel brakes lock up.

Less than 9,000 miles on a 2024 Silverado Trailboss and the Transmission goes out. Truck goes into limp mode, which is dangerous if you are on a highway. The new truck has been sitting at a Chevy dealership for 3 months waiting on a replacement part (valve). Have an incident number with GM, and they are pleasant on the phone, but they never call back with information when they say they will.

TRANSMISSION VALVE BODY No warning. Was working fine and all of a sudden shuddered and downshifted and the lights lit up. vehicle has been at dealership for 50 days now with no ETA on this part. This is a national known problem and the recall has not yet expanded to the 2024 model.

The valve body in my transmission went out in Colorado where my truck is currently at a dealership under warranty. They are putting my job at risk due to the fact that I bought that truck specifically for work since I travel all over the country for work. I told them that I need the part expedited because I need to leave Colorado and go to Texas for work on the 28th and still no help at all. All I’m asking for is for the part or a new transmission to be sent and installed before the month ends. Because if it doesn’t I’ll get fired if I don’t make it to Texas. And I’ll state this I will pay out of my own pocket even though the truck has warranty if it means the part can get expedited.

Driving on interstate 85 on cruise control when I herd the motor RPM start to climb so I tapped the break and that’s when the truck shut itself off and put itself in neutral causing me to have to coast over to shoulder of the road. Message on the dash said push start button to start again. There were no check engine lights, no overheating temperature lights. No codes at all. The truck is a 2024 with 62,000 miles and all oil changes on time. Upon checking online , this has happened to other vehicle owners as well. Apparently the Chevy Silverado with the 6.2 liter engine has problems with push rods and bearings. Some have replaced multiple engines. Chevy wants me to pay for new engine.

Vehicle with out warring lost significant portion of its power and was put in reduced acceleration mode. This is a brand new vehicle less than 12,000 miles. The truck was towed to a dealership and the cause is a failure with the transmission valve body. Truck has sat a the dealer unrepaired for 2+ months.

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that upon starting the vehicle and attempting to shift into drive(D), the vehicle failed to shift or respond as needed. The contact became aware that the vehicle also failed to shift into reverse(R). After restarting the vehicle, the vehicle returned to normal functionality, and the contacts son was able to shift into drive. The contact stated that while her son was driving 50 MPH, the vehicle briefly accelerated independently before returning to normal functionality. A message to "Please Decelerate and Drive with Caution" was displayed. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with the throttle body. The vehicle was not repaired. After investigating the failure, the contact related the failure to Technical Service Bulletin: 24NA181. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 7,000.

Mileage: 7,000

At 40mph the transmission vibration on the pedal, and at slower speeds.

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while the transmission was shifting gear, there was a hesitation before properly shifting gear. The contact stated that while stopped at a stop light and then attempting to accelerate while making a left turn at approximately 15 MPH, the accelerator pedal was depressed however, the vehicle failed to accelerate immediately but then suddenly surged forward. The check engine warning light was illuminated, and the vehicle went into LIMP Mode. The contact had restarted the vehicle and drove the vehicle a short distance to the residence. The vehicle was towed to the dealer who diagnosed that the transmission valve had failed, and the valve body needed to be replaced. The vehicle had not been repaired due to the manufacturer taking an extensive amount of time to provide the parts. The manufacturer was made aware of the failure. The failure mileage was 7,485.

Mileage: 7,485

I purchased a new 2024 Chevrolet Silverado 1500 4wd in May 2024 from a Chevrolet Dealer in East Tennessee, after having the truck for 5 months, it started experiencing a transmission "shutter / vibration" at higher speeds, it has also experienced a transmission "hard downshift" at times... a month later at only 4914 miles, it was dropped off at the chevrolet dealership here in my home state of Alabama for its first oil change and for them to check what is going on with the transmission, after the truck being there for 3 weeks, we were told that the transmission needed to come out for repairs, we advised the dealership and several GM representatives that we wanted a brand new transmission put in the truck that is brand new to start with, GM has refused and stated that they were going just rebuild the transmission.... we told them "No" and that we had bought a brand new truck, therefore it should have a new transmission, not a rebuilt one in a brand new truck with less than 5000 miles on it.... the truck has been out of our possession starting into its 3rd month being gone for repairs, not only is this a huge inconvenience for us, but its also a huge safety issue because we do occasionally pull trailers with this truck... General Motors has flat refused any help to our satisfaction with this transmission issue and has just pretty just blown us off and told us "No" when we have approached them with any kind of remedies for this situation, its pretty bad when a company that has taken a government bailout a few years ago, hasnt learned anything from their past mistakes and now think theyre untouchable.... it also pretty bad when you spend in excess of $60,000 for a pickup truck that you dont even have in your possession because of defective manufacturing.... yes, it is a safety issue even more because my family is sometimes using this truck and may not always react the same way that I would if something happened going down the road.... it needs a recall on these trucks

Unknowns at the moment- truck is at dealership. Dealership stated they have no codes to diagnose the issue. While traveling, most notably @35-45mph, there is a vibration, seemingly through the transmission or transfer case. You can feel it slightly through both the steering wheel and the fuel pedal, along with hearing it. I’ve taken it in several times and told there’s no issue. I will not accept the vehicle back until they are able to explain the issue and repair it. I noticed the issue around 20k miles. I recently took the vehicle to the shop with 32k miles on it as it is progressively getting worse.

On 1/13/25 while driving my new vehicle and arriving at destination I placed vehicle in park for 10 mins and then left putting vehicle in reverse and transmission in reverse would not engage, rolling me into decline slope and almost crashing into home. After receiving help to push vehicle in neutral, I placed car in drive and sent to dealership. Truck seemed fine in drive. Parkway Chevrolet, Tomball, TX inspected vehicle and stated no issues. Possible torque lock but nothing showing and possibly resolved. On 1/16/25 while driving to work, I stopped at gas station for coffee, left truck running. Got back in vehicle and placed in reverse, and again truck would not engage reverse. I received another push out in neutral , placed in drive and then proceeded to return home. While I’m drive check engine light came on, and truck would not go beyond the 2nd gear. I stopped at closest light to turn around and proceed home and the vehicle began grinding gea and jerking my vehicle while in drive. I tried to turn around at a dead end road and could not reverse vehicle and called for tow to dealership. Dealership at opening 7am took in vehicle 2 nd time with my complaint and called at noon. They stated the valve body of transmission needed to be replaced. Further stating it was a faulty issue chevy was aware about but nothing showing and recalled. They said no longer using manufacturer for this transmission replacement and it would be an unknown eta for repair. This is dangerous and unacceptable as it is a new vehicle with a known faulty part.

Blown transmission valve body at 8000 total miles. Truck went into limp mode and will not reverse. Can not be safely driven. Has been sitting at dealership for 2 months now waiting for parts from GM. National backorder no ETA.

I purchased my vehicle in July 2024 brand new. I started to experience an engine shudder at about 4500 miles with the truck coasting or on the accelerator around 1500 RPMs. It first began at lower speeds around 40 mph, but now I feel it at high speeds as well. I brought my truck back to the dealership three or four times and they told me that the shudder was due to the active fuel management system in my 2.7L Turbomax engine. A different dealer said that it felt like a torque converter. There are no lights on the dashboard. The dealership I bought it from failed to try and flush the transmission fluid, only documenting that they did not feel the shudder on the receipt they gave me. However, during the test drive, they told me that they can clearly feel it. They failed to give me an explanation why there was no shudder for the first 4500 miles, and that it just started. They also stated that they had not heard of this problem yet, but said that it felt completely normal, which does not make much sense.

I purchased my vehicle from Mak Haik Chevrolet 11711 Katy Fwy. Houston, TX 77079 on [XXX]. Approximately 4 months my Check Engine Light came on and I brought my Truck to Mak Haik Chevrolet to have it checked out. The Service Department could not figure out why the Check Engine Light had came on. They did complete the Recall N242435631 regarding a need to update the radio and serial communication firmware on my truck. On Saturday November 9th 2024, I brought my truck into Mak Haik Chevrolet for the 2nd oil change at approximately 10,000 miles, and the technician could not get the truck to go into reverse. I was given a loaner vehicle and told that they would contact me about the issue once their transmission technician could look my truck on Monday. I was contacted on Monday November 11th2024, and told that the Valve Body in the transmission was defective. Jim Cox, Service Advisor with Mak Haik Chevrolet, explained that he could not find the part, as this is a big issue with Chevrolet across the Country, and he would let me know when he has access to the part. I asked about replacing the transmission instead, and Jim explained that he could not get those in either? Mak Haik Chevrolet has had my truck since November 9th, 2024. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6

my vehicle suddenly experienced decreased acceleration on the highway. A warning message appeared on the dashboard indicating reduced acceleration. When placing the vehicle in Reverse, the vehicle was not able to move in reverse. The dealership diagnosed it as a valve body needing replaced.

THE TRUCK FAILED GO SHIFT INTO REVERSE. HAD TO PUSH THE VEHICLE OUT OF THE PARKING SPACE. WHEN I TRIED TO GO FORWARD THE VEHICLE SHUTTERED AND THEN SHIFTED INTO LIMP MODE. DEALERSHIP HAS HAD THE TRUCK FOR OVER 8 WEEKS NOW AND I AM TOLD THERE IS A NATIONAL BACK-ORDER ON THE NEW VALVE BODY BECAUSE OF THE NUMBER OF TRUCKS REQUIRING REPLACEMENTS.

Vehicle would not go in reverse or shift out of First gear Diagnosed as needing a transmission valve body replacement

Only 6k miles. Couldn’t go in reverse or get out of 1st gear. Brought to dealer, they said it needs a new valve body gor the transmission and there are so many trucks with this issue the part is on b/o for 2 weeks-3 months! In the meantime I have not truck.

I am writing to formally report a critical safety issue involving the torque converter in my vehicle, which has put my safety and the safety of others at risk. The problem began when I noticed rumbling noises emanating from the underside of the vehicle while driving at slow speeds on any type of road. There were no warning lamps or messages displayed on the vehicle to indicate an issue. This lack of advance notice left me unaware of the potential danger, increasing the risk of an accident. Upon having the vehicle inspected by a certified dealership, it was confirmed that the torque converter had come apart. This malfunction significantly compromised the vehicle’s drivability and posed a serious safety hazard. Sudden loss of power or reduced control, which could occur due to such a failure, puts both the driver and other road users at risk of an accident. I am deeply concerned about the implications of this issue for other vehicles that may have similar defects. I urge the NHTSA to investigate this matter promptly to determine if it represents a broader safety concern and to ensure that appropriate measures are taken to prevent further incidents. Please feel free to contact me for any additional details or documentation related to this issue. I appreciate your attention to this urgent matter and look forward to your response. Sincerely, [XXX] [XXX] [XXX] GMC, Sierra, 2018, and [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Valve Body on transmission failed at 9000 miles resulting in extreme reduced acceleration and it being unsafe to drive. No warning lights appeared until after the part failed. Failed valve body has been confirmed by the certified dealership service center. Replacement valve bodies are unavailable from the manufacturer GM. GM has not issued any formal recall for this part and searching online forums, this is a very common part failure for this vehicle.

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated while the vehicle was in the driveway, the vehicle was shifted into park and the parking brake message was illuminated. The contact stated that after disconnecting his boat trailer from the vehicle, the vehicle accelerated across the street and stopped. Additionally, while driving on three occasions at undisclosed speeds, the throttle was sticking. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 3,800.

Mileage: 3,800

On [XXX], my Chevrolet Silverado 1500 Custom, Trail Boss 7,500 miles lost immediate power during driving operations. I was accelerating from a stop and my truck immediately lost power and my RPMs rose drastically without any power to my wheels. In an instant, the truck surged in power and continued to loose it while in traffic. I had to control the vehicle by slowing down. The check engine light appeared and warning messages to reduce acceleration and drive carefully. All of this occurred violently and without any warning. The truck reduced speed on its own and allowed me to drive 35 mph for two miles into the dealership which happened to be close. There is an extreme risk here for anyone who is driving at interstate speeds and this were to happen. After experiencing this incident, I was told the transmission or the transmission valve body required to be replaced by the dealership. I researched this later and discovered an extensive list of year models with the same problem. I was told services bulletins have been issued on this issue, but this is a serious risk to loss of life. I was told today Chevrolet doesn’t have a solution to the valve body problem and I would be without my vehicle until it is found and repaired. I am requesting a formal investigation. My truck is located at Tom Gibbs Chevrolet, Bunnell , Florida. [XXX] , [XXX] , [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Per the dealership service department the Valve Body went out and it is a manufactured misbuild

1. Experiencing intermittent hard shifting accompanied by shock and noise, 2. Unexpected shifting and shifting delays that cause rapid RPM increases. These issues were primarily observed at low gears and worse with stop and go traffic. The check engine light appeared approximately one month after noticing these symptoms.