GMC Complaints

The contact owns a 2018 GMC Terrain. The contact stated while driving 45-50 MPH, a message indicating that the engine was not at full capacity was displayed. The vehicle was taken to the dealer, where it was diagnosed that the engine had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 342,000.

The contact owns a 2018 GMC Sierra 1500. The contact stated while shifted into reverse, there was a loud clunking sound coming from the vehicle and the vehicle failed to respond as intended. The contact attempted to shift to drive(D) and neutral(N) and then back to reverse(R) however, the failure persisted. The vehicle was towed to a dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 92,288.

The contact owns a 2007 GMC Acadia. The contact stated that while driving at an undisclosed speed, the vehicle shuddered, and the check engine warning light illuminated. The vehicle was taken to a dealer where it was diagnosed with incorrect piston rings which caused excessive oil consumption. The vehicle was not repaired. The contact related the failure to an unknown recall. The manufacturer was made aware of the failure and advised the contact to call the NHTSA Hotline to report the failure. The failure mileage was approximately 218,000.

The brakes are hard to push to come to a stop. I brought it to a mechanic and he said it was my vacuum pump. The air bag light comes on when you hit a hard bump in the road.

on two occasions the vacuum pump booster failed causing the vehicle to lose braking ability while traveling on a highway at highway speeds. The vehicles brake completely failed and were unable to be engaged. the part was initially replaced by the dealer at the owner's expense and then the same issue occurred only a few months later. the second occurrence cause additional damage to the camshaft and timing chain causing the vehicle to not even be able to start. The vehicle was inspected by the servicing dealer and found metal shavings in the oil as well as extensive damage to the engine.

Was issued recall notification from manufacturer in May 2023. All calls to GM (including corporate) indicate that there is still no anticipated date of repair. This is a delay in repair that has catastrophic potential otherwise.

I received a safety recall notice for my vehicle and scheduled an appointment for repair, #N212328790. Upon arriving, the dealer advised me there was a very small crack in the dash and if the dash cracked during the removal or installation, GM would NOT reimburse for any damage to the dash. The default was with the manufacturer and if they didn't replace it correctly, I'd be out serious money to replace and maintain the value of the vehicle.

On [XXX] at approximately 5:30p, I was driving normal highway speed when I saw what I thought was exhaust trailing behind. There were NO dash warning lights, engine temperature showing normal range, car was performing normally. I pulled over to shoulder, turned off car, released the hood latch. My husband tried to open hood but it was too hot. We then realized it was smoke coming from under hood, not exhaust. Smoke began to come inside car through vents. I quickly exited the car, and within a minute the entire front end engine area was engulfed in flames. 911 was called, fire, police, highway patrol responded. Fortunately there was no injury to myself or husband. There was also concern of starting a brushfire risk here in SoCal, but it was all extinguished thoroughly. Truck was towed to Al’s Towing, 475 W Vermont Ave, Escondido CA 92025, ph 760-745-5933. A report has been filed with our insurance USAA, inspection by adjuster is pending. I also notified Temecula GMC, where I purchased vehicle from, of the incident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I purchased my 2018 GMC Acadia in 2021. Two days after I purchased the "Shift to Park" error occurred. I contacted the dealer and they said that yes these cars are not recognizing they are indeed in park. After several phone calls back and forth they agreed to repair. Well now 3 years later it began to show the Shift to Park error once again. I looked up to see if they had recalled yet and GM has recalled on SOME vehicles but not sure why others like mine are excluded. I would assume this is a safety issue since the car cannot recognize its in park. I am also not returning to the dealership for repair since I don't believe it was repaired to begin with or the replacement parts are also defective. This seems to be that it will be an ongoing issue and additional costs to me every time this issue comes up.

The contact owns a 2018 GMC Sierra 3500. The contact stated while driving at various speeds, several unknown warning lights illuminated on the instrument panel. The contact pulled over to the shoulder of the roadway to restart the vehicle. After the vehicle was restarted, the vehicle hesitated to stop while depressing the brake pedal. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 53,800.