GMC Complaints

The contact owns a 2016 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. Two local dealers were 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.

The contact owns a 2024 GMC Canyon. The contact stated that while driving at various speeds, the steering wheel was rattling abnormally. The check engine warning light was briefly illuminated. The vehicle was taken to a local dealer, where the vehicle was test-driven; however, the failure was not identified. The failure reoccurred, and the vehicle was taken back to the same local dealer, where it was diagnosed as needing a rear intermediate steering shaft, and a retest was performed. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the same local dealer, where the vehicle remained under investigation. The manufacturer was made aware of the failure. The failure mileage was approximately 4,491.

Gridlines on the backup camera work intermittently when backing. The issue has been occurring since taking delivery. 20 June 2024. The dealer has made (3) attempts at repairing and has not resolved the issue. A Buy Back request was submitted 9/2025 and denied. GM advised it is a known problem they are working on. Back up cameras with gridlines became a mandatory safety feature in 2018.

Liftgate automatically closing and failure to remain open causing a safety hazard for anyone standing at the liftgate.

trailer brake control is junk, it is a known problem! While driving the control shut of the brakes of the trailer. Had a fully loaded trailer 14,000 pounds with no trailer brakes, ended up going through red light, because the trucks brakes where not enough to stop trailer!

43000 miles 2020 gmc sierra with lifter engine issues. Oil change made every 3k miles

Vehicle is randomly stalling or going into limp mode when driving. Has done it in intersections, driving down the hight way and even stopped in a parking lot. No warning but throws codes unrelated to the problem. I’ve been told that it shuts off half of my engine randomly while running and that contributes to the stall. Can cause accident if stalls while turning or even if in wrong lane on high way. You loose all power steering and basically have to coast to safety. Sometimes it re starts some times your stuck there with no reasons for it to not re start. Usually it starts same day when this happens but hours later. Sometimes it stutters and you know it’s coming but not often will you get this warning. I’ve replaced every thing in every code it’s thrown and still can’t go a week without stalling out. Very unsafe for families just trying to go anywhere. Has done in an hour into a trip or three minutes down the road. All weather conditions as well. I’ve had it to two different garages with no luck yet. Have found a bulletin on wiring for the fuse box which seems promising for the issue but am worried about putting more money into something so unreliable. At this point it’s dangerous to drive and is a safety hazard.

We have owned the car for five years. We bought it new in 2020. Now, the engine has completely failed. It has the same problems all the recalled GMC Yukon Denali XL 6.2L V8 engines have; lifters are not functioning, cam shaft is destroyed, rods are bent, oil is pooling and the aluminum engine has melted. The engine light suddenly went off and we didn’t have acceleration. The vehicle started “puttering” and didn’t drive well. No warning at all. This is a known issue with GMC (which I just found out about) and I find it absurd I have to pay $26,000 for a new engine which will most likely have the same problem. Luckily nothing happened, but if that happened on the highway with my wife and three young kids in the car it could have been a nightmare situation.

DTC CODE P1098 PRESENT RELATED TO FAULTY COOLANT CONTROL VALVE ON 3.0 DURAMAX DIESEL ENGIINE. THIS IS A KNOWN ISSUE WITH THIS ENGINE AND IS SUPPOSED TO BE COVERED UNDER THE 100K MILE POWERTRAIN WARRANTY. PREVIOUSLY TOOK VEHICLE INTO DEALERSHIP FOR REPAIR INVOLVING REPLACEMENT OF THE COOLANT CONTROL VALVE BUT WAS TOLD REPROGRAMMING OF THE ECM WAS REQUIRED FIRST STEP PER GM REPAIR BULLETIN. REPROGRAMMING COST ME $195 AND WAS TOLD THIS WAS NOT COVERED UNDER THE 100K POWERTRAIN WARRANTY. NOW, A FEW MONTHS LATER, THE SAME ISSUE AND DTC CODE P1098 HAPPENED AGAIN WHILE DRIVING ON FREEWAY AT FREEWAY SPEEDS AND CAUSED VEHICLE COMPUTER TO LIMIT SPEED OF THE VEHICLE WHICH CAUSED HAZARDOUS SITUATION IN CONSTRUCTION ZONE AS WAS NOT ABLE TO MAINTAIN SPEED OF TRAFFIC WHILE TOWING TRAILER WITH BOAT. I ALSO UNDERSTAND THAT GM HAS ISSUED SPECIAL EXTENDED WARRANTY RELATED TO THIS COOLANT CONTROL VALVE IN SEPTEMBER 2025 WHICH EXTENDS THE WARRANTY COVERAGE UP TO 15 YEARS AND/OR UP TO 150K MILES BUT I WAS TOLD AT THE DEALERSHIP THAT MY VIN# DOES NOT QUALIFY FOR THIS EXTENDED COVERAGE FOR SOME UNKNOWN REASON?

The contact owns a 2012 GMC Acadia. The contact stated that while the vehicle was parked, the liftgate independently unlatched and fell midway down, and then independently closed and latched. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact referenced an unknown recall; however, the VIN was not under recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 187,000.