2022 GMC SIERRA 1500 Complaints

On 05/28/2022 my family was driving my brand new 2022 GMC Sierra 1500 3.0 Diesel at a rate of 60mph. There was suddenly a loud clunk (transmission) after proceeding a little further and getting speed back to 60mph there was a similar “clunk”… the diesel truck then immediately gained several various check engine / sensor lights all over the dash and went into Limp Mode. Speed slowly decreased from 60mph and finally as we were navigating our final left turn to our destination the truck would not accelerate thru an intersection subjecting our entire family to utter danger of oncoming vehicles. As a last ditch effort to save ourselves I put the truck in reverse and was able to reverse about 2mph. Then proceeded to shut the truck down and turn it back on to get out of the intersection, but the truck would not come out of park. Onstar emergency was contacted to call the police as we were in an extremely dangerous situation. This truck nearly caused our entire family to get in a very bad collision. The truck was stuck in the middle of the intersection for over 2 hours. The police even attempted to help getting the truck out of park , but was unsuccessful. The truck was scanned on site and had various codes including C1555 (x4) U0101 (x2) P25A2 U220F Collision assist light Check engine light Service Traction Control Light Service ESC The truck experienced catastrophic failure at only 319 miles. Day 4 of ownership. This vehicle needs to be investigated if it is failing this early on. There also needs to be a manual release for the parking gear. Truck has no way to be placed in neutral upon failure of the transmission relay.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving approximately 70 MPH, the "Service Vehicle" warning light displayed. Additionally, while depressing the brake pedal, the brake pedal extended to the floor however, the vehicle failed to respond or decelerate. The contact stated that the ESC, trailer brake, and brakes warning lights then illuminated. After stopping the vehicle, the contact restarted the vehicle however, the warning lights remained illuminated. The vehicle was then towed to the local dealer who replaced the brake master cylinder and ABS module. The manufacturer was notified of the failure. The VIN was not available. The failure mileage was 9,700

Check engine light came on at 458 miles. Took it in and after an hour they determined it was the ecm. They said it was bad. Now they're on the hunt for one. In the meantime, in a day the truck has started feeling like it's over shifting and then bogging down. 458 miles, really! I'm going to need a loaner for longer than I've had it and still make payments.

Purchased 2022 GMC Sierra on 1/18/2022 with 0 miles on it...On 04/08/2022 the engine started a loud knocking noise...sounded like a piston trying to shoot out of engine..very loud..I was afraid to drive it.. We took it to the dealership and they said they have had a few come back for lifter problems.... Not very happy for my purchase of a brand new truck with 0 miles on it after driving for less than 3 months...

Truck drove as expected with no prior warnings. We pulled over for road snacks/drinks upon starting the truck we got a whole slew of warnings and warning lights. The warnings included:. Service ESC, Service Trailer Brake System, Service Brake Assist, Steering Assist is reduced Drive with care and finally Brake System Failure 43 MPH top speed. The check engine light, Traction Control Off and BRAKE light stayed on. We slowly drove to an O'Reilly's and got the ODB Code P25A2 (1 of 2 stored) and P25A2 (2 of 2 pending). I then noticed I had an email notification from OnStar Advanced Diagnostics: This is a Diagnostic Alert for your GMC Sierra. Dear [XXX], An issue with the Antilock Braking System in your 2022 GMC Sierra has been detected. Please service your vehicle within 7 days. The following morning the truck was was started and all seemed normal like nothing ever happened, no warning lights or warning messages Our of concern we dropped off at Garlyn Shelton Buick GMC service center to diagnose the issue. They reported finding code C05B0 for Brake Fluid Leak. Further states No external leaks found, Brake Fluid test passed 2 of 3 times, recommend needs Master Cylinder Assembly but No replacement parts available. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

service trailer brake system, service esc, steering assist is reduced, brake system failure. almost had an accident because of the brake system failure

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the Lane Departure Assist function failed to operate as needed. The vehicle was taken to the dealer and diagnosed as a malfunction of the Lane Departure Assist System. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 6.