2023 GMC Yukon XL Vehicle speed control Problems

“Speed control became stuck and I had to hit my breaks to stop acceleration. Vehicle stopped shifting while driving down the road periodically. Warning collision lights and traction control lights randomly come on with nothing in front of vehicle. Yesterday vehicle would not start or even unlock. When I did get the vehicle to start by manually unlocking it and trying over and over it would not go forward or backward although the engine did rev up. All warning lights were on including traction control and check engine. …”

“My vehicle stalled while driving on a busy highway & I had no option but to pull over, which left me & my family in a very dangerous position. Had to remove my daughter's wheelchair onto a tow truck as the vehicle had no power to use the hoist for her powerchair. Again, on the side of a busy road! Towed the vehicle to a GM dealership, who stated there was catastrophic engine failure & the engine had to be replaced. Had no way to transport my daughter until I got a new engine since her hoist was stuck at the dealership. …”

“At 9,900 miles my safety camera system failed which disabled the cruise control and all safety features that used the camera. Car was out of service for nearly two weeks and subsequently fixed by the dealer under warranty at no charge. At 11,300 miles I was driving on an interstate highway in the left lane at rush hour, without warning the car stopped accelerating the car shifted into neutral and totally lost power. It was a very dangerous situation with me in the left lane in heavy traffic. I am a skillful driver and thankfully I was able to make it off the travel lanes on the highway. …”

“Onstar connectivity module failed after dealer updates. The onstar module controls super cruise hands free driving. Module can fail during use causing accident. Vehicle did not display any warning on display screen. Vehicle is available for inspection. GMC dealer confirmed onstar module failure and is waiting on part delivery for replacement. Several searches in online forums confirm this is an issue for thousands of GMC vehicles.”

“Driving at 70 mph, the vehicle shifted into neutral without warning. When attempting to place the vehicle back into drive, the vehicle dashboard Siad vehicle condition not met . I slowed the car and pulled over. It shifted into park but now will not start and will not go into neutral for towing.”