GMC Complaints

Vehicle was traveling on interstate and lost power/propulsion and automatically shifted to neutral. Grave danger for eminent death/injury as a result of possible accident.

The contact owns a 2025 GMC Sierra 2500. The contact stated that while driving at an undisclosed speed, after driving over a small pothole on the road, the alignment was dramatically altered, causing the vehicle to slightly veer out of the intended lane even though the steering wheel was centered. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The contact stated that he previously owned another vehicle of the same year, make, and model that had experienced the same failure and a case was filed with the manufacturer for the vehicle, resulting in a buyback. The failure mileage was 2,000.

The contact owns a 2023 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.

The contact owns a 2021 GMC Yukon XL. The contact stated while driving approximately 45–50 MPH, the engine was making an abnormal sound. The contact stopped and lightly depressed the accelerator pedal and continued driving. The contact stated that the transmission failed to shift gear. The RPM increased to high. The check engine warning light was illuminated. The vehicle was taken to the local dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was repaired under warranty, but the failure recurred. The vehicle was taken back to the same dealer who determined that the failure was related to the transmission. The vehicle was repaired but the failure persisted. The vehicle was taken to another local dealer, Hennessy GMC (145 Industrial Blvd, McDonough, GA 30253); where it was diagnosed and the contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 66,000.

My vehicles High Pressure Fuel Pump failed causing the vehicle to shutoff while driving. In addition, due to the engine shutting down while driving, the power steering quit working causing me to not be able to steer the vehicle. Thank you

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.

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving at various speeds, there was grey smoke coming from the exhaust pipes. The check engine warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The vehicle was taken to a local independent mechanic for a second opinion, and it was diagnosed and determined that the engine and brake pads needed to be replaced. The vehicle was not repaired. Upon further investigation, the contact related the failure to an unstated recall; however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 125,000.

The contact owns a 2024 GMC Acadia. The contact stated that while driving at an undisclosed speed, the infotainment touch screen failed to display pertinent vehicle safety information. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to determine the cause of the failure. The contact was informed that the manufacturer was aware of the issue and was working on providing a fix. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 1,000.

The coolant control valve needs to be replaced. My estimated time to get the truck back is 1-2months. This appears to be a common problem. And its not covered under warranty