GMC Complaints

Service Trailer Brake System warning will not stop dinging and alerting. this happens constantly with or without a trailer . I dismiss the alert and it continues to sound off. I have trouble thinking or talking. Very Very distracting. Took my vehicle to the dealer and they did not know how to fix it.

The headlights flicker independently every few minutes. This occurs no matter what setting the headlights are on (automatic or not). This has been an issue since purchasing the car new in May.

Headlights continously flicker. Took vehicle in and is a known issue with no fix.

The contact owns a 2020 GMC Yukon XL. The contact stated that while his wife was driving approximately 65 MPH, the transmission started to slip out gear and the vehicle was losing motive power. The contact's wife had not observed any warning lights. The contact’s wife drove the vehicle back to the residence and while attempting to place the vehicle in park(P), the vehicle failed to respond. The contact had the vehicle towed to an independent mechanic who diagnosed the vehicle and determined that the transmission needed to be replaced. The vehicle was repaired; however, the contact stated while driving approximately 65 MPH, the check engine warning light illuminated. The contact was able to drive the vehicle to the residence. The contact stated that while attempting to restart the vehicle, the vehicle was idling roughly with white smoke coming from the exhaust pipe. The contact drove the vehicle to a different independent mechanic who performed an engine pressure test and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 102,000.

I received a letter from GMC in June 2023 (14 months ago) notifying me of a safety recall on my 2016 GMC Acadia regarding front driver side airbag inflator. The letter said the inflator my rupture during deployment sending shrapnel (metal fragments) to the vehicle interior resulting in serious injury and/or death to the driver or other occupants. I have contacted a dealer for recall repair and was told there are NO replacement parts available and no date when they may be available. 8/2/2024 I contacted GMC regarding this recall issue and no parts. The representative said GMC has no date when parts may become available, that I would get a letter when parts are available. THIS IS NOT ACCEPTABLE AND A KNOWN SAFETY HAZARD BY GMC. I can't sell my vehicle with an open known safety recall. EFFECTED OWNERS NEED ACTION NOW ON THIS RECALL, BEFORE MORE PEOPLE DIE OR ARE INJURED.

The contact owns a 2017 GMC Acadia. The contact received notification of NHTSA Campaign Number: 23V334000 (Air Bags) 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 dealer was contacted. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

Since buying this truck new in July of 2024 the Headlights when on, will every few minutes both left and right headlights along with DRLs flicker/blink off and back on again. headlights will flicker or blink Randomly as you drive or when parked the headlights will turn off for a second then come back on. oncoming drivers are being flashed from flicker thinking they are being signaled by flicker. pedestrians or cyclists think the flash or flicker is signaling them to proceed and that the truck will yield when maybe their not even seen. other drivers think their being flashed from behind with the headlights which could lead to road rage incidents. possible the headlights will stay off when they flicker, rendering the driver unable to see during night driving. this is a very Dangerous malfunction of a very important safety component of the truck.

My transmission keeps sticking when I shift into drive or reverse. Just a couple of days ago, it happened the worst it has ever done before. I shifted into reverse and my vehicle was completely stopped when I shifted. I began to let off of the brakes and gently push the accelerator to start moving back, my vehicle then punched itself into reverse. I felt after that incident, something had to have been damaged. I’m almost afraid to drive my vehicle after that. When my vehicle punched itself into reverse, I was literally jolted towards the steering wheel and thankfully my seatbelt caught me. Incidents with the the shifting into drive or reverse have happened before, but never nearly as intense. About a year ago, I brought my vehicle in to my local GMC Dealership for a concern with my transmission shifting weirdly and holding itself in gear at an unnecessarily high RPM speed. The technician stated to me, “with these 9-speeds, they tend to get confused at various speeds”. I asked him to elaborate and he could not. These issues have now gotten worse. With my suspension, every turn I take, I get a kreaking sound from my front driver side wheel well. It sounds as if my tire if going to break off. I’ve done visual inspections and nothing out of the ordinary is noticeable to the eye. My vehicle is a 2019 with less than 40,000 miles on it. I should not be having all of these issues. I’m genuinely concerned for my safety.

LED Headlamps blink off and back on in a fraction of a second. Seems to be related to low beam setting. Seems to not be related to auto-dimming functionality. Seems to be a narrow build date window from late Spring 2024 thru June 2024. Occurs when vehicle is moving or parked. Can be replicated in daylight by manually turning headlights on in the control center. GM documented with Document ID 6691954 "#PIT6203: Headlamp or DRL Flicker or Flash (July 16, 2024) Possible hazards include oncoming drivers being flashed from flicker. Oncoming drivers thinking they're being signaled by the flicker. Pedestrians or cyclists thinking the flash or flicker is signaling them to proceed and that vehicle operator will yield. Possible that headlamps will stay off when they flicker, rendering the driver unable to see during night driving. Dealerships are unable to repair as GM has not come up with a solution. Please consider escalating this issue to a formal recall due to dangers outlined above.

Numerous difficulties have arisen during the process of driving on multiple occasions. The tablet/Radio continues to reset, and the traction control sensor light continues to illuminate. I have communicated with the GMC service center on several occasions, and each time, no issues were found. During an oil change at another dealership, no service recommendations were mentioned, yet a list of offset services was listed on Mopar. As I continued to drive, I noticed that the speed controls were limiting speeds, necessitating self-serviced accelerated drives. This has been ongoing for some time while driving and has required ongoing fuel adjustments. I have received tune-up services, coolant services, fuel services, wheel balancing, and several alignments, which have recently caused significant inconvenience. Routine maintenance has been performed, and the RPM gauge remains constant during operation. Make a unsafe drive.