Body problems of the 2020 GMC Sierra 2500

The rear defroster massively overheated. It started heavily smoking and eventually exploded the rear windows. Only warning sign was the smoke which we noticed quickly because the windows were up. Had the windows been down we might not have noticed before a fire started. I'm taking it to a dealership now. This module also triggers on from a remote start. Extremely dangerous!!!.

Vehicle was parked in a school parking lot. Rear trailer harness and modules in back short circuited causing an electrical fire that expanded to the driver’s taillight rear bumper, and bed of truck.

While towing my dump trailer early in the morning for about 20 minutes I noticed sudden hard up shifting and down shifting in some gears on flat surface roads. I then proceeded to approach an incline hill about a 5% grade and then, what I've recently learned, my transmission locked up and released for a split second. The roads were slick so it didn't seem too harsh, I continued with no incident for another 40 miles and then it happened again while pulling up a 7% grade in a left hand sharp turn at 40 mph. The truck fish tailed and jack knifed my trailer on the left rear side of my truck and the front left side of the trailer. I was on a one lane road and had to continue until I reached my detitanation, I slowed and maintained a speed of 45 in order to prevent it from happening again but it did it 5 more times before reaching my destination. I'm currently scheduled to have the transmission checked on 02/27/2025 at peterson's Chevrolet nampa idaho. In the meantime, I have no means of using any of my trailers.

Tailgate fell down when I had a trailer hooked up. I was parked, then backed up the trailer. Tailgate came down on the jack and scratched the tailgate. There is a recall on some trucks but mine says no recall. Sounds like same issue.

~tl- the contact owns a 2020 GMC Sierra 2500 hd. The contact stated that while the lawnmower was inside the truck on the cargo bed, the contact depresses the brake pedal, the lawnmower went forward and hit the head of the truck and left a dent. The contact stated that the head of the cargo bed that go into the cave was very flimsy and stated it was not steel. The vehicle was taken to a independent body shop and was informed that it was flimsy and deemed the vehicle unsafe. The vehicle was not repaired. The contact mention that a general manager from parks Buick GMC, 2640 laurens rd, greenville, SC 29607, and noticed the failure and stated that something needed to be done with the cargo bed. The vehicle was not been repaired. The manufacturer was made aware of the failure but had not yet get back with the contact. The failure mileage was approximately 2,725. Aw.