GMC Complaints

After stopping at a stop sign, I accelerated for a few seconds, but then it shifted to Neutral and the screen said "Press Start Again". I pressed Start, accelerated for a few seconds, and again it shifted to Neutral and the screen said "Press Start Again." I repeated this process a few times and luckily made it to the end of our driveway. I could no longer move the car nor could I shift gears. When trying to shift gears, the screen said "Conditions Not Correct for Shift." I requested Roadside Assistance. There is no way to get this car into neutral so he had to manually pull it onto the tow truck bed. The nearest dealership diagnosed it as engine failure and replaced the engine. There were no warning signs prior to this incident.

The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); 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.

I just bought this 2025 GMC Yukon a little over a month ago, and the 6.2 engine has seized up. This vehicle started making grinding noises and shut down going 60 miles an hour. I traded in my previous Yukon and the dealer has sold it, so now I have nothing to drive. These engines are dangerous, and GM knows this and they don't seem to be doing anything about it

My extended warranty expired. I got my oil changed at valvoline and then 2 days later my power steering stopped working and I’m getting multiple dash messages of other systems malfunctioning. Did gmc cause this to get me to come back to their service center. It seems very suspicious

The cameras will work after the vehicle sits for awhile like after it cools down. But once driving or letting the vehicle run awhile the cameras shut down. I think the Video Processor Module gets hot and shuts down. General Motors is looking into this issue

Complete engine failure on July 17, 2025, related to current recall for defective engine parts on 6.2L V8 L87 engine. Towed to dealer same day. Dealer continues to report no ETA available on replacement engine. Dealer has had possession of my unrepaired truck for 46 days now and counting.

Problem #1: Trailer brakes failed while pulling 40' fifth wheel trailer. Was driving at about 50MPH on a 55MPH road and was approaching a stop light. I went to apply my truck and trailer brakes simultaneously and quickly found out I had "lost" my trailer brake. This happened another two times within the next 10 mile trip to my house. I immediately disconnected my trailer and took my truck to the shop. The GMC Dealer fixed this issue, however, it is both scary and extremely dangerous to the public when something like this happens on a brand new truck. Problem #2: Right around 30,000 miles I was driving (unloaded) down the road at about 35MPH when I felt a hard clunk in the transmission followed by grinding noises - immediately a notice flashed on the dash stating the truck went into reduced acceleration and the check engine light came on. I brought my truck to a local GMC Dealer to be serviced on June 19th and they advised me it was the Allison transmission valve body. The part has been on back-order and my truck is still at the dealership sitting in the back lot with at least 4 other 2024 HD models. I called GM twice to inquire about Safety Recall N242454440 (covering 2020-2022 GM Vehicles) and recommend that it get extended beyond 2022 since the problem with the transmission valve body has not been resolved yet. I have not heard anything back from them since that call back in June.

I drove into my driveway put vehicle in park put my window shades up and vehicle went into drive and hit my garage.i had no warnings and this was caught on my ring camera.the ring camera caught my headlights lite up on outside edge and lights kept blinking off an on like there was some kind of glitch.my.the vehicle did not brake either.i saved the video. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Transmission fail to shift. Have to stop, restart truck to get it to shift causing safety issue. Warning lighted eventually came on.

At highway speed, in heavy traffic, and falling snow, the engine seized with sudden loss of power, including loss of brake and steering sensitivity. We were traveling downhill so, while avoiding other traffic and weather, maintained momentum to pull over to the side. We were stranded at night in snowy weather in remote Utah. It took hours to get towed to the nearest town, Fillmore, where the mechanic determined that the engine was seized and that no mechanic in the town could repair the issue. GM would not tow vehicle to our home, they would only tow to nearest dealership - which was farther away from our home (over 3 hours away). After repeated attempts with GM for tow assistance over the course of 13 days, we towed the vehicle to Salt Lake City, our home city at our own expense. The Dealer said 6 of 8 rod bushings were bad, ordered a new engine which took over 2 months to receive and install. Catastrophic event occurred [XXX], Time trying to get GM to tow vehicle, ending with our own expense 2/26/2025, Finally returned from dealership with new engine 5/1/2025 - 64 days from dealership receipt of vehicle - 77 days from catastrophic event. Continues to have electrical issues that affect controls like radio, ac/heat, start/stop. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)