2024 GMC Sierra 2500

The contact owns a 2024 GMC Sierra 2500. The contact stated that while driving 60 MPH, the vehicle went into LIMP Mode. The contact stated that the vehicle then inadvertently lost motive power and was unable to accelerate above 40 MPH. The vehicle returned to normal functionality, but the failure became a regular occurrence. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed failures with the transmission solenoid and transmission control module (TCM). The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 50,000.

2024 GMC DENALI HD with approx. 12, 500 miles: The truck is constantly going into limp mode. Driving down the road, first it feels like the wheels lock up with a loud noise. Immediately goes into limp mode and check engine light comes on. Took it to the dealer yesterday 6/3/25 for repairs. I just spoke to my service advisor this morning where I was told it was the Valve Body of the transmission that needed to be replaced. However, they were on backorder and have no ETA on when they will get a replacement.

The contact owns a 2024 GMC Sierra 2500. The contact stated that after parking and turning off the vehicle, the vehicle failed to restart. No warning light was illuminated. The vehicle was towed to the dealer for diagnostic testing, but no diagnostic trouble codes were retrieved. The dealer replaced the fuel pump module. No further information was available. The manufacturer was made aware of the failure and advised the contact to file a vehicle safety complaint with the NHTSA Hotline. The failure mileage was approximately 11,000.

My truck is experiencing an issue that is already a recall for similar trucks, but my VIN is not included in the recall. My tailgate opens on its own. This sometimes happens when I am driving down the road. This is a safety risk because if I am hauling something in the back, and the tailgate drops down, there is a chance the load could fall out of the truck and harm another vehicle or person that is behind my truck. I brought the truck to the dealer and they said they could not find any evidence of this issue, even though they stated that it is a known issues with these trucks. There were no waring lamps or messages. The only symptoms are that the battery can die if the truck is not used for a day or more and that the tailgate opens on its own whether the truck is parked or driving.

Safety Concern Report: 2024 GMC Sierra Gear Shifter Obstruction ⸻ Vehicle Information: 2024 GMC Sierra [Specify 1500/2500/3500] [Optional: VIN Number] ⸻ Description of the Problem: I am writing to report a design concern with my 2024 GMC Sierra. The location and height of the gear shifter on this vehicle significantly obstruct the driver’s view of the center infotainment screen and console, especially while seated in a normal, upright driving position. The gear shifter blocks important information such as navigation directions, ETA, media controls, and other on-screen notifications. This forces me to lean forward or reposition myself in an unnatural way while driving, which I believe creates an unnecessary distraction and increases the risk of driver error or loss of situational awareness. I have attempted to adjust my seating position, steering wheel angle, and seat height, but none of these adjustments fully resolve the obstruction. After discussing this issue with other owners online, I found that multiple GMC Sierra owners have experienced the same visibility problem. Some have even resorted to aftermarket modifications to address the design flaw. I believe this is a design oversight that affects safe vehicle operation. I respectfully request that GMC and the National Highway Traffic Safety Administration review this issue for potential corrective action. ⸻ Requested Action: Please investigate this safety concern and consider potential solutions, such as a recall, design revision, or retrofit option to improve screen visibility without forcing the driver into unsafe driving postures. Thank you for your attention to this matter.

Warning chimes and tones go silent intermittently, thus not providing audible alerts to the driver of vehicle problems and/or warnings. The problem has been reported and confirmed by a GM dealership. The dealership confirmed that there is a bulletin within the GM system that there is a problem however there is no current fix. This problem has existed for over 10 months of ownership. There is no warning that this has occurred other than there is no warning chimes/tones, only visual indicators.

The contact owns a 2024 GMC Sierra 2500. The contact's husband stated that while driving 60 MPH, the vehicle started violently bouncing up and down. There were no warning lights illuminated. The vehicle was taken to a dealer; however, the dealer was unable to duplicate the failure or diagnose the vehicle. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 12,000.