2022 GMC Sierra 2500

[XXX]: After arriving home and parking in my driveway (plugged in the block heater that came installed from the factory), approximately 35 minutes later my neighbor rang the doorbell. She was yelling that my truck was on fire! The flames were starting to hit my eaves on my house. I put the fire out with my hose. The Sparks Fire Department had to pry open my hood to disconnect the batteries in order to stop the truck from lighting back on fire. The vehicle has been inspected by General Motors and turned over to their insurance. My insurance has also inspected the vehicle and stated they believe that the wiring to the block heater was faulty. There were no warning lamps, messages or other symptoms of the problem. This truck has 19,000 miles and is 1.5 years old (2022). How could this be turned over to GM's insurance and not under warranty? I have not had my truck for over 2 months now. I wonder how many of these trucks are lighting on fire? The truck is currently at the local dealership and is available for inspection. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Trailer brake controller that is built into the truck intermittently works when towing a trailer. I will be towing down the road and all of a sudden I will get a warning on my gauge display that says “check trailer wiring” and the light that indicates that the trailer brakes are working goes out. Meanwhile, all of the lights on the trailer still work. After about one second, another message appears and says “trailer brakes connected” and the light on the brake controller comes back on. When this happens, the larger screen sometimes has a message that says “trailer brake gain recalled” but sometimes it says “brake gain not recalled”. When the message “check trailer wiring” comes on, the trailer brakes don’t work. The trailer brakes start working again when the message “trailer brakes connected” comes back on. You can feel this in the truck, especially when it goes off, on, off, on, etc while you are trying to slow down. You literally feel the truck surging as the brakes are intermittently being applied. I have taken the truck to a GMC dealership and they were not able to duplicate the issues since the issue only happens when the truck is hooked up to a trailer that has trailer brakes. I had a certified RV mechanic inspect the trailer brakes and they are working like they should. I hooked the same trailer up to a Ford F-250 and had zero issues. I hooked the same trailer back up to my GMC and immediately had the same issues. I am taking the truck and trailer to a different GMC dealership on March 11th to see if they can duplicate this and diagnose the problem. I called GM corporate customer service and they were basically no help. This is a big safety issue because the truck is not telling the trailer’s brakes to function like they are designed, which makes it much more difficult to slow down, especially going down hill. I have done a bunch of research on this problem and found numerous online forums on this topic, so I know I am not the only one experiencing this

The engine failed. The 2022 GMC Denali had 12,000 miles on it. This was a brand new truck. We were driving home at night the engine began to make noise and then cut off in the middle of the road. We had to get the car towed. The truck was left on the side of the road on a very busy highway. The dealer confirmed the engine failed and found metal shavings in the engine. The dealer has recommended a new engine from the GMC Manufacturer. The manufacturer has not yet responded to the dealerships request. The engine light did come on prior to the engine shutting off.

The contact's brother owns a 2022 GMC Sierra 2500. The contact stated that while her brother was driving 30 MPH in cold weather, he activated the heat and the moon roof exploded. The contact's brother opened the moon roof cover, and glass entered the cabin of the vehicle, falling on his arms. The contact's brother did not sustain any injuries. The contact stated that there was no impact to the moon roof that could have caused the moon roof to explode. The vehicle was taken to the dealer, where it was diagnosed that there had been an impact on the moon roof, causing the moon roof to explode. The dealer replaced the moon roof. The manufacturer was made aware of the failure and advised the contact to file an insurance claim for the failure. The issue was currently in arbitration. The failure mileage was approximately 6,931.