GMC Complaints

Headlight flicker, affects day time running light, low beam, high beam and possibly taillights. Lighter flicker off and on periodically about every 1-2 minutes consistently regardless of driving or parked, and regardless if the lights are switched on automatically or manually. Problem has been continuous since purchase of vehicle 1 month ago.

Left rear tail lamp failed after only 90 miles. It is available for inspection upon request. This tail lamp also contains the left turn signal, so when turning left, the signal flashes faster. The dealership has been notified of the issue and has inspected the issue in question. There were no warning lamps indicating the lamp was not functioning until I turned my left turn signal on. Now, there is a check left tail lamp indicator every time I use my left turn signal. I have been waiting on the replacement part for approximately 6 weeks with no ETA on a resolution, all while GM thinks its ok and safe that I drive my car without a left rear turn signal and brake lamp.

Both headlights flicker every 1-2 minutes, does matter if switch is on automatic or on.

The vehicle is a 2020 and should not already be having electrical issues. The vehicle repair is over 5k for needing a starter motor, water pump and drive belt. A starter should last up to 100k miles and water pump should last 10 years not 4. This vehicle is a lemon and should not have so many issues.

Purchased new from dealership 2024 GMC Terrain 4/2024. On 6/26/24 while driving the vehicle the transmission came apart and the vehicle suddenly stopped and would barely move off of the roadway. Had this happened 2 min prior while at highway speeds in crowded conditions, I can only imagine how many injuries could have occurred. My vehicle had 3800 miles on it. Upon my personal research, I found that this is a known problem with the 2024 GMC Terrains and dealerships across the country are filled with vehicles with the same problem. The dealership admitted to me that this has become "a known issue" and that they currently had 7 others with the same issue. They had my car for 8 weeks and according to my paperwork had to repair it twice as it failed the first repair road test! I filed a compaint with GM and was told "to not believe third party sites". I repeatedly asked why this wasn't a recall and they refused to answer the question. Does someone have to have their brand new transmission blow apart at 80 mph and take out others on the highway before they recall this? GM has issued multiple service bulletins to their dealerships but nothing to the public. I tried talking to the dealership and was belittled and stonewalled. Please recall these vehicles before someone is killed. I was finally given my vehicle back from the dealership today after 8 weeks because of no parts available. I am worried they repaired with the same parts that failed in the first place.I have the repair paperwork for your inspection if you would like to review it.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while her husband was driving 80 MPH, the vehicle skidded approximately 100 yards; however, there was no impact to the vehicle. The vehicle was towed to the dealer, where it was determined that the front driver's side upper control arm and ball joint had fractured, causing the front driver's side wheel to become wedged beneath the subframe. The vehicle was not repaired. The dealer advised the contact to contact the insurance company to have the vehicle inspected. The manufacturer was made aware of the failure. The failure mileage was approximately 40,000.

The contact owns a 2015 GMC Acadia. The contact received notification of NHTSA Campaign Number: 23V334000 (Air Bags); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

The headlights on the truck turn off for a split second and continue to do so randomly. If I had to guess they are turning off and on every 5 minutes. This causes people in front of me to think I am flashing them and the bigger concern is if they were to not turn back on again. The dealer I brought it to said that GM is currently working on a software solution to figure out the problem. Researching this issue online I found that there is a TSB already filed (PIT6203) for this issue and it sounds like there is some success fixing the issue by swapping out the headlights but does not always fix the issue. GM has not come out with an official solution for this widespread issue yet.

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 not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

Break booster pressure sensor and engine underbooster causes the car to slam on breaks or not break at all.