GMC Complaints

Vehicle does not recognize that it's in park. Once parked a warning comes on telling you to shift to park. The vehicle does not completely shut off because it does not believe that it is in park.

After heavy rain the backseat of the car was flooded as well as the rear wheel well likely due to the sunroof not draining properly. This led to electrical failure of the sunroof mechanism and potential to damage other electrical elements. This will be looked at by the dealership but have read that this is a known issue.

Low coolant light keeps coming on and dealership checks and confirms coolant is not low. The end result is the sensor In the resivor is bad and requires the entire tank to be replaced rather than just the sensor

Warning light stated “Vehicle Restraint System requires Service”. Dealership looking into warning light.

The electrical system keeps throwing a code for short to ground as well as low voltage codes. The voltage gauge on the dash shows either over charging or under charging. The in dash radio and screen shut off and turns back on by itself while driving down the road. Occasionally while backing up or pulling forward the truck completely stalls. The transmission was subject to the shudder issue, we took it to King Cadillac in Lake City, SC for the transmission flush. After the flush we have not felt the shudder, but instead Occasionally when pulling off from a dead stop, or while crossing the very busy highway my house is on the truck looses momentum almost as if the transmission is failing to engage at all, and all of the sudden about 15 seconds later it engages and accelerates at a rapid rate. The steering is extremely loose in the tires, however the steering wheel engages after about 3/4 of an inch. I have taken it to said King Cadillac multiple times and they maintain that the steering is 100%. Although I can not let go of the steering wheel and continue straight for any length of time. I am constantly having to adjust the steering to match the pull of the vehicle to avoid changing lanes or running of the road. After 60mph the tire shake is horrible, after 70mph it is hard to keep the truck in its lane.

My PCV failed the winter of 2021. It blew the rear main. My Terrain has been parked since then.

I received a letter 2 months for a fix for airbag recall; however, there still isn’t a fix. GMC is refusing to do anything and they insist that it’s safe for me to continue driving my car when they know that the driver side airbag is unsafe. They said it will get fixed whenever they get the parts and just continue driving it until then.

The contact owned a 2014 GMC Terrain. The contact stated that while stopped at a red light a vehicle one rear-ended the vehicle. This caused the contact to crash into in front of her. The air bags did not deploy. A police report was filed. The vehicle was towed to an impound lot. The contact sustained back and neck injuries. Medical attention was needed. Additionally, the driver of vehicle three received medical attention with unknown injuries. The manufacturer was not notified of the failure. The failure mileage was 80,000.

electric parking brake turn on while towing behind Rv did damage to driver side ,had towed it for 340 miles before this happened it is not in my manual to disconnect the ground cable ,when I took it to dealer they gave me a paper stating I need to disconnect the ground cable after putting truck in neutral I told them GM should have put that in the manual instead of tell the dealer .I have turned a claim into GM thru bbb auto line have not heard back yet

Truck is a diesel. Fuel pump blew up and died in the middle of the street. Now I'm being told the Fuel system needs completely re done and will cost me 10g. I also found a lawsuit for this issue as well.