2021 CHEVROLET SILVERADO 1500 Electrical System Problems

A week or two before I took my truck into decorah Chevy isr because tailgate was going up and down all by itself while I was driving or parked without me by it. They said it was just the latch button . So they fixed it they said and still my blinker lights would just come on and then I hit a deer and my seatbelt did not latch and my airbags didn't deploy even though my app says they did. I'm wondering if all three are connected with electrical . Either way my air bags did not deploy and my truck has extensive damage and my seatbelt didn't lock ,

The vehicle has been showing a “shift to park” message error upon shutdown even though the vehicle is fully in park and door automatically unlock when parked. This has left the accessories on and drained the battery

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while the vehicle was parked, the contact was unable to remove the key from the ignition. The contact stated that several attempts were needed, and up to 45 minutes were needed to remove the key from the ignition. The vehicle was taken to the dealer, but was not diagnosed or repaired. The contact was referred to a locksmith regarding the failure. The manufacturer was made aware of the issue and referred the contact to the NHTSA Hotline for further assistance. The approximate failure mileage was 101,000.

Mileage: 101,000

Vehicle was at a stoplight with the auto start button engaged on it. The vehicle completely stalled. All the power is drained from the car. leaving me stranded in the highway. I got it towed and when replacing the battery still nothing will roll over or even turn on.

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that upon arriving at the destination and turning off the vehicle, several attempts were needed to release the key from the ignition. The contact also had to leave the key in the ignition on several occasions because the key could not be released or removed. The vehicle originally returned to normal functionality, but the key had since become permanently stuck in the ignition. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the ignition switch. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 69,000.

Mileage: 69,000

This is a recurring and random issues: 1. The "Stereo" shuts off and will take anywhere from a minute to 10 minutes to come back on. The issue is: a. This cuts out the use of hands free operation. b. It stops all use of GPS c.I can no longer use my cell phone to call in an emergency 2. The backup camera (which is the "Stereo") goes blank or dark on occasion. Cannot see to the camera for backing up anymore. 3. The "Stereo" stops responding, but still has power. This means the radio or music or whatever is still playing but I cannot turn it DOWN or OFF. Very unsafe that I cannot turn this off when driving, cannot hear sirens, etc. I have tried to have this addressed by Chevrolet. They "reset" the truck but I did not work. They want to replace the "stereo/backup camera/communication system" but cannot guarantee this will actually fix the issue. It is over $2000 to "try" this fix I contacted GM customer service and was told NO RECALL, NO RECOURSE

Auto tailgate would open and shut on its own, the rear tailgate button stopped working and then only the interior switch would work, Then after a month, the tailgate would not open and switch shorted out. Seems very similar issue as other chevys with water intrusion.

While driving at anywhere from 18–25 mph or 70–85 mph, my speedometer starts going crazy, the engine accelerates or decelerates, the speedometer shows random numbers, and you can hear and feel that the motor power feels different. Not all the times but is started to show more often

The following is a list of persistent electrical failures in my vehicle, several of which present a significant safety risk. I have attempted to resolve the issues: •Emergency OnStar Button Failure: My vehicle's emergency OnStar buttons consistently fail to function when the ignition is off. This is a critical safety defect, as the system is designed to work on a backup battery during an emergency, such as a crash. The system only operates when the ignition is on. • Excessive and Dangerous Floor Hump Heat: Following a service visit on October 2, 2025, the front floor hump became excessively hot, melting personal items and posing a fire and burn risk. •Fabricated Safety Warnings: The vehicle's computer system repeatedly displays false and misleading messages. Examples include an incorrect "new brake pads detected" prompt and a "taking your eyes off the road" warning that does not apply to this vehicle. These phantom messages are distracting and can cause driver confusion. •Persistent Connectivity Failures: The vehicle experiences frequent and consistent failures with its Wi-Fi and GPS systems, indicating a potential electrical or software malfunction. Numerous resets attempted by the manufacturer's technical support have not resolved the issue. • Computer Display Anomaly: the Chevrolet symbol appeared in red on the computer screen when the truck was started. The vehicle has repeatedly experienced spontaneous changes to the radio station and the air conditioning switching from cold to hot without driver input. •Unusual Decompressing Sound: When the vehicle has been sitting for an extended period, an unusual decompressing sound can be heard coming from the rear underside whenever a door is opened. Date: Software updates on January 27, 2025 and October 2, 2025. Diagnostic Test performed on October 2, 2025 that failed to resolve the issues. The OnStar buttons only works when the vehicle is turned on. I do have photos and videos available to support your claim.

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that the vehicle failed to start. The vehicle was taken to the local dealer, where it was diagnosed and determined that the battery needed to be replaced. The vehicle was repaired on two occasions, but the failure persisted. While attempting to open the trunk, the trunk failed to open. The manufacturer was not contacted. The failure mileage was approximately 500.

Mileage: 500

See attached document for complaint.

Vehicle: 2021 Chevrolet Silverado 1500, 3.0L LM2 Turbo Diesel Mileage at most recent failure at 106k miles Complaint Narrative This vehicle has experienced repeated, serious defects affecting engine, transmission, emissions system, and safety recall performance. Despite numerous repair attempts over three years, the problems remain unresolved and the vehicle is currently undriveable and held by the dealership (since August 17, 2025). Key safety concerns: Transmission failure: Transmission catastrophically failed at 78,942 miles due to excessive metal contamination, requiring full replacement. Transmission issues have persisted even after replacement. Recall N24254440 (rear wheel lock-up): Dealer attempted recall repairs multiple times in 2025 but failed due to programming errors. Recall remains incomplete and unresolved. Hard starting / reduced power: Vehicle intermittently fails to start or loses propulsion, creating risk of stalling in intersections or traffic. Engine/emissions failures: Multiple check engine events with NOx sensors, exhaust differential pressure sensors, and coolant flow valve failures. Current status: Vehicle has been in dealer custody since Aug 17, 2025, with no completion date. Dealer reports unresolved oil leak, check valve/box sensor replacement pending, and open recall not fixed. The cumulative history shows systemic defects across powertrain and emissions systems, ongoing safety recall failures, and lack of durable repairs. I am providing all invoices, videos, and documentation upon request. --- Chronological Service Timeline Invoice #Mileage (in/out)DateReported Issue / Repair Attempt 33432337,290 → 37,62607/11/22 – 07/30/22Check engine light. Multiple fault codes. Dealer performed diagnostics, suspected exhaust leak, removed components for inspection. 33433837,450 → 37,50807/

General Motors is selling vehicles that are unsafe, unreliable, and unfit for consumers. My experience shows a clear pattern of negligence, misrepresentation, and disregard for public safety. On or about April of 2021, I purchased a 2021 Chevy Silverado RST z71 from Vetter chvrolet for about $56,000. GM promoted this vehicle as safe and dependable. Within the short 4 years of owning this truck, I faced major failures: engine issues, transmission problems and electrical malfunctions causing the parking break to engage on its own, at highway speeds of 70-80 mph on which nearly caused a serious accident, and failed Electronic Stability Control (ESC) system. This system helps maintain vehicle control, and a problem with it can affect braking, steering, and handling, Despite following GM’s maintenance guidelines, GM delayed repairs, denied coverage on certain failures, and left me with thousands in out-of-pocket costs. The vehicle remains unreliable and unsafe. For myself and my family, 2 children under 3 years old and one on the way. This is not an isolated issue—GM has a long history of recalls and defect cover-ups. These vehicles put lives at risk, cause financial hardship, and violate consumer trust. No one should fear for their safety in a vehicle marketed as “dependable.” This has impacted me by having : • Expensive repairs • Loss of transportation for extended periods • Ongoing fear of driving a defective vehicle with my family in it. Loss of use of my vehicle • Fear and emotional distress driving an unsafe product I have contacted GM and the dealership multiple times. Responses were dismissive, repairs were inadequate, and GM refuses accountability. Requested Resolution: Full reimbursement for all related costs Buyback (preferred) of the vehicle OR permanent repair at no cost Public acknowledgment and stronger quality control. Warning to Consumers: Think twice before trusting GM. Their failure to correct dangerous defects shows profits matter more than safety.

Tailgate experienced issues with not unlatching when button is pushed and also unlatching when button is not pushed.

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated while driving at various speeds, or while attempting to reverse, the infotainment system displayed a blank screen; however, approximately a minute later the infotainment screen displayed as intended. The contact stated that the radio became silent and then thirty seconds later the infotainment system operated as intended. A dealer was contacted. The vehicle was taken to the dealer where it was determined that the infotainment system needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and opened a case. The approximate failure mileage was 44,540.

Mileage: 44,540

My 2021 Silverado has the same issue as the current recall, whereas the tailgate open by itself when the vehicle is operations. This happens when it rains. The first time I noticed it I lost a cooler out of the back of my truck on the interstate highway. The second time it came down when hauling a trailer and cause minor damage to the tailgate. I have since removed the fuse that controls the tailgate. I notified Chevrolet of the issue, but the stated that my truck is not under the current recall.

Engine started making clicking noise when accelerating. Followed by a large screeching noise. Dash read "shift to neutral and start again" pulled to stop and tried to start. Does not crank at all.

I am filing a formal safety complaint regarding a persistent and unacceptable failure with my 2021 Chevrolet Silverado Trail Boss. The vehicle intermittently fails to start due to a recurring “Service Steering Column Lock” error. While the key fob still locks, unlocks, and remote starts the truck, the push-to-start system becomes entirely non-functional once inside the vehicle. This defect is not only frustrating — it’s dangerous. My wife has already been stranded twice, once in below-freezing temperatures in January, and again in May, causing her to be late for work and left alone at night in unsafe conditions. A truck purchased for over $60,000, marketed as rugged and dependable, should not be experiencing a critical failure like this at just 48,000 miles. What’s more concerning is that this appears to be a known issue within the GM community, with no official recall despite Technical Service Bulletins (TSBs) acknowledging the problem. Customers are being left with unreliable transportation and no consistent fix. This failure is both a mechanical and safety issue, leaving drivers vulnerable without warning. I urge NHTSA to investigate this defect, pressure GM for a formal recall, and ensure corrective action is taken before someone is injured due to being stranded or the failure progressing to more critical steering or ignition malfunctions.

I purchased this truck 3/20/2025. I have since realized it wasn't me doing something wrong. The truck hesitates and shakes during shifting upon acceleration from a stop and when putting it in park and attempting to turn the truck off it has a message on the display saying "shift to park" and it will not turn off until you repeatedly restart it and play woth the gear shift to get it to register that it's in park. I have made an appointment to take it to the dealership to be looked at. The truck has 75,000 miles on it.

Batter dies for when it's cool out side and the truck has a brand new battery. The battery has since I've had the truck .replaced the battery last year and it stills die..when it's cool outside..false reading on brakes had them checked twice at the dealer ship .the truck loses power when turning the corner and I makes a loud clunk nose when I drive..

The rear power tailgate was randomly opening and closing on its own, on several different occasions. The safety risk was, if the tailgate would have opened when traveling down the roadways, items in the back could have fell out and possibly striking another vehicle and causing an accident. The truck has been taken to Gandrud Chevrolet in Green Bay WI, confirmed there was a faulty tailgate switch and replaced. There was no warning before the switch failed, it just happened on its own.

The tailgate is opening automatically without anyone near the vehicle or keys. It has only started recently and I see similar vehicle models are being recalled for the same issue. My concern is that this could happen while driving down the road, posing a risk to other drivers if there are items in the bed of the vehicle. Prior to the tailgate opening unexpectedly, the button to push on the tailgate that opens it quit working. It will only open with the keys or button in the cab, or now at random times.

No check engine light, and my transmission didn't engage gear. I left vehicle off for the night, started it and it worked perfectly fine. Still, no check engine light was on.

Tailgate, inadvertently opens. Causing, causing items in my truck bed to be exposed, although I haven’t lost anything while traveling. I have witnessed this occurrence while truck is locked sitting in my driveway, last incident was last night, 13 Feb 25. Also, noticed it when pulling out of a repair shop after getting brake pads put on vehicle. Wife had witnessed it a few months ago while driving back from town. I noticed a recall had been made about Chevrolet trucks and inadvertently opening tailgates. However my truck was not listed as a recall, when I checked VIN. Called Chevrolet garage to see if they could find my VIN on the recall list. Most of the recalls were on the 2500 and 3500 series but it also listed trucks with switch in cab for tailgate to open. I do have an appointment for the problem at Chevrolet garage in the 18th. To fix problem and prevent causing a hazard on the roads.

I turned my truck on after grocery shopping and a notice to "Service Power Steering" popped up on my dashboard. I took it to a mechanic shop where they ran diagnostics. They discovered a TSB # 21-NA-149 and error code U0131. They believe there is an intermittent fault within the wiring causing the power steering to go out. My biggest fear is that this happens while I am negotiating a curve and lose power steering causing a crash or someone to get injured. There was also a "Service ESB" notice on the dashboard after the power steering notification.

The truck jerks when first driving and will jerk and lundge at various times and speeds. There is a almost grinding nosie. It often says "Reduced Engine Power" and the engine light comes one, the "Service ESC" notice comes on with the vehicle light, when this happens the truck will barely accelerate even if flooring the gas, continues to make a grinding noise. This happens frequently, but then lights go away, then come back on. Dealership pulled multiple codes (image attached). This is a huge safety risk due to failure of acceleration, and the jerking that causes the truck to jerk while in motion and slow.

Started The Vehicle and the Steering wheel would not turn. Warning said: Service ESC & Service Power Steering Drive and the Stability Control Light came on. After ready many complaints about the same thing, we turned the car off for 20 minutes and then on again and it worked. But this is dangerous.

1. The automatic tailgate opens by itself randomly. It appears to be malfunctioning. I am unable to open it from the tailgate now. When it’s open it continues to attempt to unlatch making the noise. It’s opened while driving. 2. So far I lost a cooler on the highway due to this problem which would cause a road hazard to other drivers. 3. I brought it to the dealer they said it’s not there problem due to my vin not matching the recall even though there’s a recall for this problem with same year trucks. 4. It has not been inspected due it not being an official recall. 5. No warning lights regarding this issue.

I washed my truck and now suddenly the tailgate opens and closes whenever it decides and I have paint that is bubbling and it looks as if it’s gonna all chip right off the hood

UNKNOWN. PARK Switch module is not working correctly. The vehicle keeps displaying message saying the vehicle needs to be the parking position.

Push-button tailgate electrical failure. Tailgate opens on its own while driving and while truck is off. This is a known issue that has already been recalled by GM but my truck was not included in the recall, even though the problem and repair are exactly the same as the currently recalled vehicles. I had to pay a GM Dealership to make the repair as the vehicle was unsafe to drive due to potential for flying debris from the bed while driving.

Hello: I have this issue with my vehicle, and have read several people on Chevrolet Silverado message boards noting that their windshield wipers do not function properly when turned on. My wipers only work when I push the button to wash the windshield and they do not work in any other setting. I believe this is something that should be looked into and it seems like this is a good place to start.

I was driving down the highway when my tailgate open on its own. This has happened 4-5 times where items could have fallen from my truck bed and caused an accident. There is an active recall for this issue but according to my VIN my vehicle isn’t affected but it clearly is. Dealer has inspected and confirmed it’s the same issue as with other models.

There is a current recall out there for the tailgates releasing on 20-24 Chevy Silverado 2500 and 3500. I own a 1500 and am having the same issue. Water is getting into the rear electronic switch and releasing the tailgate unbeknownst to me. I have lost items that were in the bed on the pickup on the road while traveling. Can the recall include the 1500 models also?

MY Windshield wipers stop working on low and high and from time to time my vehicle will not go in reverse. when it does finally go in reverse it's a very hard jerk, also when I'm driving it gets a drag an acts like it wants to stop going. It happens frequently and it has been going on for months.

UNKNOWN - The truck began jerking/braking on its own while driving last week. I took it to a local transmission shop where it has sat for the past week as they said the transmission control module/tcm needs to be replaced but the part needed is on back order. This issue sounds similar to the recent transmission recall (N242454440) though our vin does not show there to be a recall on our exact vehicle. Our truck meets the specifications of the recall and having it inoperable has placed a hardship on my family. How can I get it fixed under this recall at a local GM dealer?

Vehicle attempted to do an 'over the air' update to the infotainment system. This prompted an error message, stating the update failed and return to the dealership. Took vehicle to GM dealer, diagnostics were run, and dealer stated that an update was not available, and the module for the infotainment system was bad. Quoted me $1600 for replacement and install. Have read multiple reports with owners' having the same issue. Infotainment system attempts to do an update, and it fails. The owners are left paying out of pocket for something that was not their fault. This needs to be a recall. Not only are you paying a hefty amount for a repair that is not your fault, but the entire Infotainment system doesn't not work (stereo, cooling/heating info, back up camera etc)

The tailgate activates on its own, whether the truck is on or off, in motion or parked, the tailgate will activate and open at random times. There is no button that is pressed down, and no user error making this happen. When driving the vehicle, the tailgate will slam open and if you are pulling a trailer, the tailgate will slam into the trailer hitch and cause damage. Also, contents falling out of a truck bed is also a serious concern for other drivers. The truck was read for codes, and the code U0140 came up for the body control module that is malfunctioning. The truck has not been inspected by the manufacturer as of yet, but if need be, it can be arranged. The first time this error was noticed was in August 2024, and has been happening on & off since then. There were no dashboard lights on showing an issue was present when it first started and even now there are still no warning lights. Please consider issuing a recall, this is a major safety issue for other drivers.

The inner tailgate on my 21 Silverado is not functioning properly. The upper electronic button on the tailgate operates the inner tailgate and will release when opening the vehicle. It will continue to release by itself and can cause damage to the vehicle or to other vehicles while carrying a load.

Fuel pump module failure while driving causing vehicle to stop abruptly while driving at highway speeds.

While leaving work I started the truck like normal and the dash lit up like a Christmas tree. Saying service ESC, service power steering,and service brake system. The ESC light was on as well as the check engine light. There was no forewarning about this.

Lifter failure of the right bank in 2021 at 19,000 miles. At the time of failure engine was 2.5 quarts low on oil. Ever since, this truck has been using oil excessively. I am currently involved with an oil consumption test. Of which over the last 5k miles I have had to have more oil added by the dealership.

Multiple times at varying speeds my 2021 Silverado has produced engine misfire codes. I have never been able to get to it quick enough to see what cylinders are misfiring so it always gives me a general P0300 code. The following first two times it was confirmed by Widrick truck and diesel in Carthage, NY. The last time it happened, the code disappeared before I would take it to the Chevy dealership. Widrick said they can’t fix the problem because they don’t know what it is, and Chevrolet denies there is a problem at all. The truck still has less than 50k miles on it

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed, the vehicle stalled with several unknown warning lights illuminated. The vehicle was taken to the dealer where the vehicle was diagnosed as a failure with the engine wiring harness. The contact was informed that the engine wiring harness needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The failure mileage was approximately 52,696.

Mileage: 52,696

In January 2024, the electric tail gate started to spontaneously open and close. This occurred while driving and in park. I took it to Outten Chevrolet in Allentown, Pa, where they stated it was a problem with a switch. They replaced it. Within a month I was told there was a problem with this model, and a recall was being planned. Over several months , I kept inquiring about the status of the recall, hoping to be reimbursed. I finally contacted Chevrolet directly. I was told that there was a recall, but my vehicles VIN number was not included. I feel that I should be reimbursed.

Electric tailgate opener button switch on tailgate failed and allowed tailgate to open while traveling. Lost a tote containing tools onto the roadway when accelerating from an intersection. Luckily it was a rural road with no traffic and no one hit tool tote in the roadway. This seems to be a serious safety hazard especially if a motorcycle would of hit lost cargo in the roadway.

When you drive the truck for at least an hour then you turn it off the entire front like vibrates or shakes . It almost feels like something is still turning in the transmission but everything is turned off. This particular truck has already had the engine replaced at 14,000 miles bc it was faulty. It also has issues with tires. The radio and lights also all go off for brief time and then it comes back on. At times the drives side seat belt will lock and it pins you to the seat where you cannot move and you have to remove the seat belt. It is becoming more of an issue. I believe the transmission to be going out. Today, I wasn’t sure if the vibration in the truck was going to stop. So I stopped driving the truck and went and got another vehicle to drive

My check engine light came on. When taking it to the dealership, they say it's the Catalytic converter. The converter is not an electronic part, so we replaced the o2 sensors and the check engine light came back on. I've taken this truck to several people who repairs cars, and The vehicle is only 3 years old , should not need to be replaced. A converter should last 10-15 years. In doing some Research, I found the the 2019 recalled for the ECM module. Causing the same issue as the faulty reading on a catalytic converter. I am now out of warranty due to being 2,000 miles over the limit.

Rear tail gate opens when parked and while driving. It also opens when key has been removed.

The key fobs for keyless start/lock/unlock stopped working and batteries replaced still didn’t work. Brought to dealer to be fixed. They replaced a sensor thinking it would be the fix- did not work. They found a corroded wire and replaced it. Asked them what happened and how it corroded. They said it was nothing we did wrong it just corroded. Cost $1000+ for fix for an issue that seemed to “just happen”

Back in March 2024 the tailgate opened on its own only a few times. Now April 2024 it opened on its own several times without a button being pushed. After it opened it made several clocks like the tailgate is trying to lower. Now the tailgate button does not work and can only open it with the key fob

1. Trucks start/stop delays. When in traffic or crossing over lanes the truck fails to turn back on/start. When the truck does turn back on, the truck jumped forward almost sending me and my family into on coming traffic. 2. When trying to start the truck the starter will turn over constantly not turning on the truck (motor is turning over). The starter will time out after about 20+ seconds. The starter does this when auto start/stop is activated, so we get stuck in traffic almost causing accidents.

On Sunday, January 4th, the tailgate of the truck began unlatching and opening on its own. It has done this repeatedly since that date. Only unlatches when the vehicle is in park and unlocked. The electronic latch will continue to cycle (click) after the tailgate has initially opened. Exterior taillights and side markers flash as they should with each cycle. This issue is identical to the warranty recall issued recently for the 2020 through 2024 Chevrolet and GMC 2500 & 3500 trucks.

On the evening of Dec 19th, our 2021 Chevy Silverado 1500 DuraMax with 19K miles on it caught fire, burned, and was declared a total loss. We were on our way to go pick up our travel trailer as were we leaving for a trip on Xmas with our 2 dogs and my brother-in-law. Smoke started billowing out from under the hood and within minutes the front end was engulfed in flames. I have pics/videos. We’re ok but that was a scary situation that could have had a different outcome. We could have been on the highway towing our trailer with our 2 dogs and bro-in-law and who knows how long it would have taken the fire department to arrive on scene on the highway. There were no warning lights etc. to notify us. The truck gets driven, taken care of and I had just driven it the day before. We’re not aware or have seen any recalls. All info is on our Chevy app. We filed a claim with our insurance, and it has been paid off now, but in reality, "our fault" in insurers eyes. No cause was determined. That being the case, GM has closed claim and say not liable for personal property lost in fire, as insurance didn't contact GM with any mfg defects and insurance has already paid off the truck. We are repeat Chevy customers. This was our 4th leased Silverado and we also have a Traverse. The lease on the burned-up truck was coming due May 2024. We way overpaid on the milage. We're not filing a homeowners claim for lost personal property as insurance has paid off the truck and we don't want to be dropped. My question is wouldn't this be under warranty? Should the truck not be replaced? We didn't cause the fire. Much more damage could have occurred. People and pets could have possibly been injured or worse. If we were towing our travel trailer, that would be another big loss. The truck is no longer "available". Insurance told me today it's being sold for parts, which honestly kind of scares me. I wouldn't want a truck part that was in a fire, damaged or not. Videos not attached.

Truck lost power and shut down without warning while driving in traffic. Happened twice on the way home from church with my family. First time truck shut off as we were turning across a busy intersection. Coasted off on to shoulder of highway. After several attempts truck restarted. It shut off again before reaching home. Has to call a tow truck. Has truck towed to local Chev dealer on New Years Eve. Dealer kept truck three days. Could not find problem. I picked up truck, drove home, truck shut off just before I reached my house. Coasted into driveway. Called dealer. Said bring it back. Waited two hours. Truck started so I drove back to dealership, approximately 15 miles. Truck shut off again without warning on highway in front of dealership. I sounded horn and flashed lights as I coasted across oncoming traffic into dealership parking lot. This was on Wednesday Jan 3rd. Friday afternoon dealer called and said that hey have not been able to isolate problem. Said they know they are losing communication between modules but don’t know where. The “fix” they claim is to take the cab off the truck and replace entire wiring harness! Cost is $6300. Truck has 48,000 miles on it. All highway and road miles. Can’t afford $6300 to repair a 2.5 year old truck. I am fortunate that neither me or my family were involved in a crash due to truck shutting off unexpectedly. This is a very dangerous issue.

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving approximately 60 MPH a burning rubber odor and a smoke haze was present inside the cabin of the vehicle. After stopping to investigate under the hood flames were present at the passenger side fire wall of the engine compartment. Moments later the cabin of the vehicle was in flames which quickly spread and the entire vehicle became engulfed in flames. The fire department was called to the scene to extinguish the flames. The vehicle was destroyed and towed away. A police report and fire report were taken. The cause of failure was not determined. The manufacturer was not notified of the failure. The local dealer was contacted. The failure mileage was 90,000.

Mileage: 90

Push start button malfunctioned. The vehicle would not turn off last night and took about 30 minutes to get vehicle to turn off. Next day, had the same issue where vehicle would not start and left me stranded. After calling for a tow truck, I was able to start the vehicle. When researching the problem online, I saw several other complaints of the same issue where the buttons malfunctioned and could either not start their vehicle or turn the vehicle off.

Engine suddenly began to run rough and slowed substantially while driving. If this occurred at highway speed, it could have presented a safety risk. Multiple check engine lights and error messages appeared at the time of the event - "service emissions system" and "65mph max speed" Dealer inspected vehicle and found a shorted wiring harness and fuel injector. The faulty parts were replaced

Unknown

On three separate instances (two after paying $3,000 to "fix" it) my 2021 Trailboss is flashing warnings of: Park Assist Off, Steering Assist is Reduced Drive with Care, Service 4WD, Service Trailor Brake System...all while driving down the rode and losing all gauges/flatlining and no fuel warning engaging (had a 1/2 tank). The Chevrolet Dealer claims it's not producing a code (Thankfully I recorded the evidence)...Truck has just over 40k miles and has been driven with care. **Pictures are all while driving down the road** Serious electrical and SAFETY ISSUE and it needs to be RECALLED and addressed!

Tailgate opens on its own or doesn’t want to open with push button

While pulling out into traffic the vehicle will momentarily lose all electrical power and the engine shuts off causing loss of brakes and steering.

I bought this vehicle brand new off the lot in 2021. Truck hasn’t had any problems until this year. Every few weeks it will randomly just not want to start, I’ll usually check the battery and the battery will be completely drained. I can’t figure out what is causing the battery to drain like this, but something needs to be done as I have literally been stranded places due to my truck just deciding not to start randomly. Today i’m having this exact problem, my trucked was parked overnight in my garage and I went to go to work this morning and once again the truck won’t start and battery is drained. All my doors are shut and no interior lights are left on.

The monitor has disconnected many phone calls and rejected software updates. The monitor has been reported to the dealership and has been in many times for harness replacements, harness for the door locks and the timeframe for the repairs was a couple of weeks. The monitor still disconnects calls and I must pull the car over and restart the truck the monitor stays off sometimes until the monitor wants to engage. The history of the truck with this issue has been documented with the dealership

The 2021 LT Trail Boss with the 5.3L engine started a really rough idle, engine knocking, random misfiring, had Service Emergency Brake, Service ESC messages on the display, check engine light and several other dash warning lights. The dealer diagnosed the truck with lifter fail apart (failure), intake valve push rod bent, and PCM failure. Odometer reading 19,368 miles.

Body control modules sas modules no communication service esc light and traction control lights coming on vehicle looses all steers ng when lights come on at any speeds it says service esc power steering loss drive with caution have had it into multiple shops and no diagnostic scanners can get into the 3 systems there 6050 miles on vehicle we haven’t gotten in a wreck yet but that is totally not out of the question it will happen and when it does its going to be devistating

2021 Chevy Silverado durmax brought it in three times now for starting issues 2nd time found data module was bad two weeks later brought it back for same issues. Dealer said they can’t find anything wrong I’ve broke down on hwy 5 in. Dangerous spot and know I don’t feel safe driving this.

Can't pull a trailer without the SERVICE TRAILER BRAKE SYSTEM LIGHT coming on a dinging over and over. Had my trailer completely rewired only to find out its a malfunction on my truck not my trailer. My truck is a 2021 Silverado z71 trail boss with low mileage

The ESC, parking light, traction control, and engine light came on while driving home. The engine started to shake. There was an issue with braking and steering the vehicle that made it difficult to control. A message on the dash said Service ESC. A report was sent via OnStar Notifications that said An issue with the emissions system is detected. After trying to restart the vehicle a few times, the lights will not go away. The truck is driving rough.

Driving down the road and out of know where engine starting knocking and lagging, idled rough. Drove to dealer lifter failure was what was diagnosed. 10000 miles on the truck driven easy, no towing or anything. Dealer also informed me 3 other silverados were there for the same problem! Ridiculous!!

On July 27, I encountered a failure of the rear vision display system on a 2021 Chevrolet Silverado. In short, the system used to display the rearview image went blank, and remained blank, the moment I first shifted the vehicle into reverse. Hence, no rearview image was visible while I was in the process of backing up the vehicle. I believe this may be a noncompliance with FMVSS 111 or a closely related safety defect (I worked in Safety Engineering at General Motors and Ford for a combined total of more than 30 years). I made a video to document this failure, and I uploaded it to YouTube. It is available at the following URL: https://youtu.be/zhBZwteAcBg This vehicle was provided to me as a loaner vehicle while my personal vehicle was being repaired by Quality Chevrolet in Escondido, California. Shortly after leaving the dealership, I pulled over to the side of the road and paired my cell phone with the vehicle. It took several attempts to successfully accomplish this. I then made a hands-free call and then proceeded to drive home. Within a couple miles, I decided to make a U-turn. Given the size of this vehicle, completing this U-turn required backing up. The moment I placed the transmission in reverse, the center display went blank and consequently no rearview image was displayed. Even after I shifted the transmission back to Drive, the center screen (which is also used to display other things like the radio station, time, temperature, etc.) continued to remain blank. However, the audio continued to function (noted at 1 minute and 15 seconds into the video). I decided to make a video to document the condition prior to turning off the ignition as my experience has been that such malfunctions are likely associated with software errors that can be difficult to track down and replicate. I drove this loaner vehicle several other times before returning it to the dealer. On each occasion, the rearview image displayed when the vehicle was put in Reverse.

The lifters in the truck are failing, a brand new truck 12,000 miles on it and the lifters have failed. Which is also leading to an oil problem. They are trying to only fox one bank of lifters instead of replacing both. Due to them wanting to wait until the fail. They have known about the problem and i bought the truck from them not knowing that the engine was a faulty engine. When you pay 70,000k for a truck you are expecting it to last a lot more than 6 months. Which is also causing the bent pushrods on the truck. I bought the truck brand new at the end of January, for the lifters to fail, valve springs, and for bent pushrods, I’m estimated to be out of my truck for the next 3/4 weeks which would bring it close to lemon law

Upon returning home after a short drive I pulled into my garage and almost drove through the wall… I purchased parking assistance and it was not provided. The feature apparently failed and turned off at some point without clearly notifying the driver. I don’t know if it provided a silent notice that automatically dismissed but it certainly did not notify me when I really needed it… low speed. The park assist light is indeed off now when the vehicle starts. Clicking the button reports “Park Assist Off” even though it already appears off and is certainly not providing the intended safety feature. Clicking the button again does not turn the light back on but if clicked again it will again report it was disabled. This is strange and confusing for the driver. Using the infotainment screen one can toggle “Park Assist” off and the drivers info screen by the speedometer will finally say “park assist off”. Turning the feature back on in the infotainment screen actually turns the park assist button back on for about 5 seconds then it silently turns off and the driver is NOT warned that the system is not working. The driver is not properly warned of feature failure even though it appears the software knows it is not working. The little button goes out but the driver message screen does not warn the driver. This failure and poor awareness is a safety risk. Yes, we are unlikely to be parking super close to someone but we might indeed park near a GAS hot water heater or similar hazard in work trucks. The driver must know if safety features failure during driving. Otherwise they are potentially more hazardous than vehicles without them. Drivers will by design rely on these features and MUST be warned if the vehicle knows they have failed. I don’t love that the vehicle has already had a failure with only 1695 miles but this dangerous software concerns me more.

Car Fire - Started at the rear of the cabin between the cabin rear window and the truck bed The fire engulfed directly around and inside the fuel tank. The car is available for inspection as far as im aware at the tow / salvage yard The safety of myself and any passengers were greatly put at risk. The fire engulfed the inside cabin within seconds, and caused a total loss on the car. The problem has not been identified elsewhere. However the almost exact scenario has occurred in the manufacturers other 2021 model vehicles on the Tahoe and Yukon, with recalls on file for both for incorrect seal around the fuel tank, causing fuel tank fires. The car manufacturer does not want to help at all, they are willing to deal with insurance company and that is it, who will just pay out the value of the car. The police and fire crew local to the incident have ran reports on the fire. No warning lamps occurred before or during the fire. The car was operating as normal until the large explosion. There was no accident, nothing was hit, witnesses described small embers / flames flying up from the truck bed right before the big explosion, indicating there was fuel spitting out and catching on fire.

Driver side front marker light bulb not working after 700mi. Not a big problem but annoying enough for a 2 week old, $49,000 truck.

GOT CEL CODE P25A2, C2A02, C2A03 3 TIMES NOW. FIRST TIME DEALERSHIP HAD NO IDEA (SUBURBAN CHEVY SANDY OR), SECOND TIME THEY REPLACED A WHEEL SPEED SENSOR. NOW THIS IS THE 3RD TIME AND THEY HAVE THE TRUCK FOR WHO KNOWS HOW LONG... TRUCK GETS THE CEL WHILE DRIVING.

I LOST CONTROL OF THE VEHICLE WHEN THE ROAD BECAME BUMPY. THE VEHICLE WAS BOUNCING UP AND DOWN PITCHING FROM SIDE TO SIDE. I WAS DRIVING THE POSTED SPEED LIMIT. THIS HAPPENED ON THE DAY I BOUGHT THE VEHICLE AND I WAS ON MY WAY HOME FROM THE DEALERSHIP. AT FIRST I THOUGHT THE VEHICLE WAS ACTING LIKE THAT BECAUSE IT WAS NEW. NOPE. IT'S REAL. THE TRUCK BOUNCES AND PITCHES HARD EVERY TIME I HIT A BUMP IN THE ROAD. I EVEN DROVE BACK TO THE LOCATION WHERE IT HAPPENED ON THE FIRST DAY THAT I BOUGHT IT AND SURE ENOUGH THE VEHICLE ACTED THE SAME WAY. THE ENTIRE TRUCK SHAKES AND BOUNCES VIOLANTLY WHEN I GO OVER BUMPS. I'M TALKING ABOUT EVERY THING. THE SECOND THING IS THAT WHEN THE VEHICLE WARMS UP IT STARTS HUMMING LIKE AN ELECTRICAL TYPE OF HUM OR NOISE. THE HUMMING IS COMING FROM THE PASSENGER SIDE OF THE VEHICLE AND I CAN HEAR EVEN WHEN I'M STANDING OUTSIDE OF THE VEHICLE ON THE PASSENGER SIDE. THE TRANSMISSION SLIPS WHEN I SLOW DOWN AND SPEED UP AGAIN. THE VEHICLE THAT I AM DRIVING IS DANGERIOUS AND SHOULDN'T BE ON THE ROAD. CITY STREET OR HIGHWAY DOESN'T MATTER IN MY CASE. THE TRUCK WILL VIOLENTLY SHAKE AT THE POSTED SPEED LIMIT.

Mileage: 25

ON THURSDAY FEB 18TH IS WAS SNOWING WHEN I LEFT WORK, DROVE AROUND THE BELTWAY APPROXIMATELY 30 MILES GOING ON AVERAGE 30-40 MPH.NO ISSUES JUST BAD ROADS. RIGHT AFTER I LEFT THE HIGHWAY AND TURNED ON TO A MAIN ROAD, I WAS APPROXIMATELY 1 MILE ON THAT ROAD IN THE MIDDLE LANE DRIVING STRAIGHT AT ABOUT 25-30 MPH WHEN MY NEW 2021 SILVERADO (5000 MILES) LOSS POWER. THE BATTERY AND CHECK ENGINE LIGHT CAME ON WITH NO ENGINE POWER. AS THE VEHICLE WAS COASTING ATTEMPTED TO GET OFF THE MAIN ROAD, BUT DIDN'T MAKE IT DUE TO THE SNOW COVERED ROADS AND SLUSH. ENDED UP IN A MERGE LANE STILL IN TRAFFIC AND WAS ALMOST HIT NUMEROUS TIMES. TRIED TO RESTART AND GET TO A SAFE LOCATION, BUT WHEN PUSHING THE START BUTTON THE SILVERADO WOULD CRANK EXTREMELY LONG PERIOD OF TIME AND THEN FINAL CUTOUT. WAS ON THE PHONE WITH ON STAR WHERE THEY PUT ME IN CONTACT WITH THE LOCAL POLICE DEPARTMENT WHO NEVER SHOWED AND THEN LEFT ME A MESSAGE THEY WERE COMING OUT DUE TO THE INCLEMENT WEATHER. THANKS. AFTER TALKING WITH POLICE DISPATCH ON STAR SETUP A TOW TRUCK, BUT GAVE THEM THE WRONG ADDRESS WHICH WAS MORE THAN AN HOUR AWAY FROM MY LOCATION. ONCE BACK ON THE PHONE ON STAR STATED THEY HAD TO CALL THE SAME TOW TRUCK DRIVER/COMPANY WHICH OF COURSE HE WAS OVER AN HOUR AWAY. ONCE THE TOW TRUCK DRIVER ARRIVED 3 HOURS AFTER MY TRUCK BROKE DOWN HE SAID HE WAS ORIGINALLY ONLY 10 MINUTES FROM MY LOCATION PRIOR TO ON STAR SENDING HIM TO THE WRONG LOCATION. WHAT A MESS. HAVE A LOANER CAR BECAUSE I HAVE BEEN TOLD A FUEL PUMP IS ON NATIONAL BACKORDER. ALSO THAT THEY WILL BE REPLACING THE VALVE SPRINGS WHICH IS ANOTHER ISSUE I THINK? HOPING TO KNOW MORE THIS WEEK.

Mileage: 5,000

THE ANTILOCK BRAKE SYSTEM (ABS), BRAKES, AND ELECTRONIC STABILITY CONTROL SYSTEM (ESC) MIGHT NOT ILLUMINATE. THIS COULD CAUSE THE DRIVER TO NOT KNOW IF ANY OF THESE SYSTEMS ARE INOPERABLE.*DT*DT

Mileage: 7,500

INFOTAINMENT SYSTEM DOES NOT WORK ALL THE TIME. XM RADIO HAS NO SOUND AT ALL, OR AS I AM DRIVING DOWN THE ROAD THE XM RADIO VULUME ON ITS OWN GOES SO LOW YOU CAN NOT HEAR IT AND THEN YOU CAN NOT TURN IT UP OR DOWN WITH THE VOLUME CONTROL ON THE DASH OR THE ONE ON THE STEERING WHEEL. TO CORRECT THIS ISSUE ONE HAS TO TAKE THIER EYES OFF THE ROAD AND USE THIER PHONE IF IT IS PAIRED WITH THE SYSTEM OR TURN THE RADIO TO FM OR AM. AFTER DOING THIS THE VOLUME CONTROL WORKS ON XM. THIS HAS HAPPENED SINCE I GOT THIS VEHILCE NOV 30,2020 UNTIL NOW ON AND OFF.

Mileage: 600

WHEN THE TRUCK IS PUT IN REVERSE THE BACK UP CAMERA BECOMES VERY 'FUSSY' AN UNUSABLE. THE ONLY HAPPENS AT NIGHT WHEN IT IS NEEDED THE MOST. THE BACK UP CAMERA PROVIDE NO HELP IN FACT MAYBE DANGEROUS.

THIS 2021 SILVERADO HAND A COMPLETE ELECTICAL FAULURE LEAVING THE VEHICLE DEAD IN THE IN THE ROAD AT NIGHT. WE HAD NO POWER AT ALL, NO WARNING FLASHERS IN THE DARK AT 9:00 PM AT NIGHT. WE WERE ALMOST HIT BY A CAR COMING AROUND CONER AS WE BROKE DOWN AT THE INTERSECTION WERE NO STREET LIGHTS WERE. THIS TRUCK HAS LESS THAN 500 MILES ON IT AND HAS ALREADY HAD THE FULL ENGINE REPLACED, PROBLEMS WITH THE INFOTANMENT SYSTEM AND NOW A COMPLETE ELECTRICAL SHUTDOWN. WE WERE UNABLE TO GET THE VEHICLE TO DO ANYTHING AND WAITED FOR TWO HOURS IN THE ROAD FOR A WREAKER TO ARRIVE.

Mileage: 500

FULL ENJINE FAILURE AT 371 MILES CAUSING LOSS OF CONTROL.VEHICLE WAS DRIVEING ON CITY STREET ABOUT 30MPH WHEN FAILURE HAPPEN. JUST PRIOR TO THAT VEHICLE STALLED IN TRAFFIC AT A STOP WHEN WAITING FOR A RED LIGHT. SPRING BROKEN IN PISTON CAUSEING FAILURE. ALSO HAD PROBLEMS WITH INFO. SYSTEM BLANKING OUT AND NO RADIO THEN WHEN IT DID WORK NO VOLUME CONTROL ON THE RADIO. INFO. SYSTEM FIRST FAILED WHEN BACKING UP AND NO RADIO AT ALL. SECOND TIME WHEN MOVING FORWARD BUT I HAD RADIO BUT NO VOLUME CONTROL. 3RD TIME WHEN BACKING UP AND NO RADIO AT ALL. 4TH TIME WHEN DRIVING FORWARD AND NO RADIO VOLUME CONTROL, THEN A FEW MINUTES LATTER THE ENGINE FULLY FAILED. THIS VEHILCE WAS BOUGHT NEW AND ONLY HAD 371 MILES ON IT. THE ENGINE IS A 5.3 VOTEC GM ENGINE.

Mileage: 371