2022 GMC SIERRA 1500 Complaints

Year: 2022 Make: GMC Model: Sierra 1500 Denali 6.2L V8] - Location: Navajo Nation Reservation - [XXX] INCIDENT DESCRIPTION The engine completely seized while driving at highway speed, rendering the vehicle inoperable. Farmington GMC dealership confirmed total engine failure requiring complete replacement. All engine components available for inspection at dealership. I request preservation of all failed components for manufacturer/NHTSA inspection. Safety Risk This catastrophic failure created severe safety hazards: 1. Highway Emergency: Engine seized at approximately 65 mph, causing sudden power loss requiring emergency stop in remote area off [XXX]. 2. Remote Stranding: Breakdown in extremely remote Navajo reservation area with minimal cell service, no local emergency service available, leaving family of three small children, y wife and myself, stranded overnight in vehicle under harsh desert conditions and exposed to robbery or worse. Emotional and mental stress was very high. 3. System Failures: Complete engine failure caused loss of power steering, brakes, air conditioning, and charging systems during emergency stop. Dealer Confirmation YES - Confirmed by Farmington GMC Dealership (Farmington, NM): - Complete engine seizure diagnosis - Total engine failure requiring replacement - All diagnostic documentation available Official Inspections - GMC dealership technicians confirmed engine seizure - Requesting formal GM inspection of failed components - Insurance inspection: Pending to contact USAA - Request: Preserve all components for NHTSA analysis Warning Signs CRITICAL: NO warning signs prior to failure: - Comprehensive service 5 days before failure - all systems normal, fluids topped off Pre-trip service records show all systems within normal parameters Additional Information GMC issued recall for 2021-2024 Sierra engine defects (VINs/parts unavailable) Dealership confirmed relation to known manufacturing defects INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

While traveling at highway speeds in a very congested and busy segment near Virginia Beach Virginia the truck began shifting erratically and suddenly lost power which required me to cross two lanes of traffic 30 miles an hour below the speed limit to get to the shoulder. Cars were swerving everywhere to miss us with this sudden loss of power and speed. The truck has been towed and now at the dealer where it has been diagnosed with a stuck/failed pressure control solenoid and the valve body must be replaced which is apparently on back order due to the high number of failures on the GM 10speed transmissions. Such a sudden loss of power and the reduced power mode of the software made the situation extremely dangerous at highway speeds in congested traffic. Something should be done quickly to get these vehicles off the road until a suitable fix is resolved as someone is going to get killed.

I bought the truck 3.5 months ago with 66,000 miles with a recall (reprogramming) on the transmission already done according to the dealer. Then yesterday on 6/25 the truck stuttered then shifted hard. When I got to my destination it didn’t have reverse. But no warning lights. So I drove it to the dealer and before I got there it did it again and sent the truck into a power loss mode this time with a warning light. And would barely finish going up the hill with cars behind me. Now they are saying it needs a transmission but gm is only offering to pay half. Also saying the diesel would be covered but my gas isn’t even though I’m pretty sure they are the same transmission makes no sense. Lastly shouldn’t them offering to pay %50 show that they know they have a problem

Due to GMC not having a fix for the safety recall to repair the potential engine failure, we are unsafe driving our car. This has been in effect since April and still no fix is available. We feel extremely unsafe driving this car due to this issue.

The OnStar module is no longer working. When I purchased the vehicle, the green light did not turn on. I called customer service, and they advised me to take it to the dealership since they were unable to connect to the vehicle. I am unable to contact emergency services in case of an accident, and I cannot access services like remote location and remote start from the mygmc app. I have seen several people online state that their module failed as well. It's a common occurrence that falls onto the customer to pay for. An update to the module seems to be the reason so many modules are failing.

The tailgate keeps dropping while driving and while parked. The key fob is in a protected area or not near truck at all when this occurs

I was on the way to the airport and my vehicle suddenly went into reduced power mode and had trouble shifting into gear. I pulled over, shut off my truck, and turned it back on only to have the problem continue. I was able to turn around and make it home, but the vehicle would then not shift into reverse. We had to push the vehicle so that I could position it in the street. Once we were back from vacation, I took it to a GM Certified Service location (my local Cadillac dealership). After review, they diagnosed a defective valve body and the engine recall. I’ve been informed as of today that my valve body will be $3,000 and GM will not cover it because I have more than 60k miles on the truck (it has 72k). After research, this is a common issue and it is ridiculous that GM will not escalate the issue and help consumers with this clear problem due to their manufacturing and/or design. The vehicle is currently sitting at the dealer waiting for a back ordered valve body and I have had to go out of pocket to rent a vehicle. Every service for the vehicle has been completed at a GM Certified Service location. It is available for inspection immediately, if required.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving at approximately 65 MPH, the vehicle was losing motive power. The contact stated that the message to “Pull Over" had flashed on the instrument cluster. The contact pulled over and turned off the vehicle. The contact waited for approximately 20 minutes and then restarted the vehicle. The contact was able to resume driving. The contact stated that later the failure reoccurred, with the check engine warning light illuminated. The contact pulled over and had the vehicle towed to a local dealer. The dealer diagnosed the vehicle and determined that a sensor in the transmission had failed and needed to be replaced. The vehicle was repaired. The contact stated that the failure reoccurred, the vehicle lost motive power, and the check engine warning light illuminated. The contact returned the vehicle to the same dealer who diagnosed the vehicle and determined that the transmission needed to be replaced. The vehicle was repaired; however, the contact stated that the failure reoccurred. The vehicle was towed back to the same dealer. The dealer had not yet diagnosed the vehicle but advised the contact that the transmission had failed. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 31,000.

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 80 MPH, there were several abnormal loud sounds coming from the vehicle and the vehicle lost motive power. The vehicle was drifted over to the shoulder of the road. The message “Shift to Neutral and Restart Vehicle” was displayed. The vehicle failed to restart. The contact performed an inspection under the hood and determined that the engine had seized. The contact stated that the failure occurred while on travel. The vehicle was towed to the hotel. The following morning, the vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had been at the dealer since April 28, 2025. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the dealer for a status update. The failure mileage was 60,910. Parts distribution disconnect.

The incident occurred during a journey from Sacramento, CA, to Winchester, CA, a distance of approximately 486 miles in my 2022 GMC Sierra AT4, equipped with the recalled 6.2L V8 engine, which has accumulated around 61,000 miles. I was driving when a loud bang caught my attention over the music. After that, I heard swooshing sounds three times before the engine lost power. I was able to move over to the right shoulder throughout heavy traffic; I managed to make it safely. During the maneuvering of my truck to the shoulder, I noticed on the dashboard that the vehicle was telling me to shift the vehicle to neutral and start it. I shifted the vehicle to neutral, but it did not start. Upon inspecting the fuses and battery for any obvious issues, I proceeded to check the harmonic balancer for signs of engine seizing. The engine had completely locked up.