GMC Complaints

Tailgate open/clise module continues to open without me hitting the auto release device in the truck OR fob. NOTE: GMC built in Quebec! It resulted in a call to the dealership this spring, an inspection and they indicated it was fine. The tailgate opened while I was parking my new Airstream and it caused damage to the propane tanks and tanks cover AND $1700 damage to my tailgate.

The contact owns a 2024 GMC Sierra 2500. The contact stated that while driving at various speeds, the two outside cabs were smoking. There was smoke detected near the fuel tank. The contact stated that there was an abnormal odor of diesel and DEF detected. There were no warning lights illuminated. The vehicle was taken to the local dealer, but the vehicle was not diagnosed or repaired. While driving, there was a lot of smoke detected from the vehicle. The vehicle was taken back to the local dealer, who was unable to determine the cause of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 100.

Headlights flicker on and off causing periods of zero visibility during night time driving. No warning lights or messages.

Headlamp or DRL flicker or flash (#PIT6203A) No urgent safety issue. Issue was documented by and verified by #1 Cochran 7997 Market St. Youngstown, OH 44512 Ph: 330-367-5461 Customer #[XXX] Invoice #[XXX] Vehicle has not been inspected by any others. No warnings or messages prior to the issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Headlights flicker approximately every 30 seconds. Creates unsafe driving conditions and is a distraction to other divers. Other drivers assume I am flashing my headlights at them. Dealer has not been able to fix the issue. This occurs whenever the lights are on.

Shift to park had this repaired in 2019 issue has popped up again. After a while my vehicle will not turn off I will be unable to walk away from my vehicle until it recognizes I’m in park. Today (29 August 2024) I arrived to work and went to turn off the vehicle and it gave the shift to park warning. This vehicle has needed the drive shaft (what was replaced during the last event of this matter), electronic control module, transmission, and thermostat have all needed to be replaced all in the first 5 years of owning it. Bought new in February of 2017.

Bought ‘24 Canyon one week ago. Vehicle headlights flicker a second at a time on their own. Flicker seems to happen once every 1-2 minutes. Flicker can cause confusion with other drivers and ignite road rage.

My brakes failed 2 times. One time I almost got into a horrible wreck with my daughter in the truck. "Brake system failure" " max speed 43mph" I have not had any brake work or anything done. The dealer is trying to charge me to replace the whole brake system when [XXX] this says to reprogram. Still waiting on gmc to tell me if it's covered under warranty. From my own research this has been a major problem for hundreds of people if not more. I could have died because of a faulty brake system or a bad software update. I need help with this and so do the countless other 2020 gm owners. There is a recall on the 2019 for the exact problem but not the 2020s. GM safety recall N192268090 please advise INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2019 GMC Sierra 1500. The contact stated while driving 40 MPH, the vehicle was vibrating and shaking abnormally. The contact pulled over to the side of the roadway and turned off and restarted the vehicle and the shaking ceased. The contact stated that the failure became a persistent failure. The vehicle was taken to a dealer and independent mechanic to be diagnosed. The contact was informed that the vehicle had experienced transmission failure however, the vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 84,000.

Purchased this vehicle with 49,000 miles on it. Currently, it has 55,000. When I shift the car into park and turn it off. I am met with a consistent ding and error messages displaying “Shift to Park.” With this error message I am unable to fully turn my car off, it drains the battery and I cannot lock my car door. I have to turn the car back on and mess with the shifter which sometime takes a longtime. I cannot just leave my car on and drain the other components; it’s frustrating. I called my local GMC dealer. I told them about the current issues with these cars as it isn’t a secret that this is a common problem. I pointed out the TBS on this make and model and I’m expected to pay for this out of pocket because my powertrain warranty ended June 30th 2024.