*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Electrical system › 12v/24v/48v battery
The contact owns a 2024 GMC Sierra 3500. The contact stated that while the vehicle was parked, the contact attempted to start the vehicle however, the vehicle failed to start. Upon inspecting the vehicle, the contact became aware that the battery was drained. The battery was recharged. The contact stated that while driving, there was an abnormal odor inside the vehicle. The vehicle was taken to the dealer where it was diagnosed and determined that the battery was overheating. The contact was informed that the battery needed to be replaced. The vehicle was repaired. The manufacturer was contacted and made aware of the failure. The contact was informed that an incompatible battery was…
Oct 26, 2026 · 48,000 milesElectrical system
The gauge cluster flickers and goes blank completely while driving, over head windshield screen display still works, and throws an - Accretion speed limited- message. Truck has electronics software issues, climate control flickers, works sometimes, most times doesnât, loose electrical connections. Over all the gmc truck is a major software glitch and GMC does not want to take accountability for there lemon product which is very costly in repairs. Gmc service is not great and the warranty period of 36,000 miles is not justifiable. My truck has 68,000 all highway miles, not city miles. 2024 gmc Denali top in its class, and still has more issues than my 2007 gmc Sierra
Oct 6, 2026Steering
While operating my 2024 GMC Sierra EV Edition 1 at approximately 21,000 miles, a "Service Power Steering" warning appeared. Steering effort initially increased and then rapidly progressed to a near-complete loss of power steering assist. The steering wheel became extremely difficult to turn, making anything more than a gradual sweeping turn nearly impossible. I was able to safely exit the roadway into a parking lot. After shutting down and restarting the vehicle, steering assist returned to normal. No crash or injury occurred, but I believe this represents a significant safety risk because loss of steering assist at highway speed could result in loss of vehicle control.
Sep 28, 2026Engine
Vehicle lost power, seemed to slip while pulling hills, Exhaust brake didn't seem to work. Dealer determined cause by DTC P209. Tested injector circuit, found loose terminal tension at injector number 6 connector. Replaced Cylinder # 6 injector connector. Did have multiple warning lights. Also submitting because Service Bulletin 23-NA+027 covered up to 2023. Believe it's an ongoing issue since vehicle is a 2024.
Sep 7, 2026Unknown or other
I am reporting a recurring potential safety defect involving the front fender liners on my 2024 GMC Sierra 3500. The vehicle currently has approximately 10,000 miles. During that time, at least five front fender liners have been replaced across both sides of the vehicle for the same recurring problem. During highway driving, the front fender liners appear to lose their intended shape and rigidity. Portions of the liner deform or move inward and make physical contact with the rotating front tires. The condition has continued to recur despite multiple replacement liners being installed. I am concerned that continued contact between the liner and tire can generate friction and heat and could…
Sep 11, 2026Service brakes
integrated trailer brake control system goes in and out of working order while towing either one of my trailers. one being a boat trailer and the other being a travel trailer. Have taken to local GMC dealer several times and they changed the rear plug the first time, which did not fix the issue. big safety concern if I can't stop my vehicle and what I am towing. Dealer claims it is most likely trailer issue but both these trailers brakes work perfect when towed with other truck. I see that they are having a big problem with this but they claim my VIN number is not included in the recall. Yet I am having the exact same issues. I get on and off warnings TRAILER BRAKES DISABLED SERVIC REQUIRED…
Sep 8, 2026Service brakes
Battery voltage low and required a jump to start. Advised battery had to much resistance. Drove to dealership. Upon pulling out on to highway without warning sudden engine loss and stalls. Steering column locked and shortly after the brakes locked up making it to where the vehicle could not be moved. This is a major safety issue and WILL lead to a fatality. My drivers side door exposed to oncoming traffic on a highway. 2 tow trucks, multiple technicians to coordinate keeping jumper cables on long enough to keep the brakes functioning to move the vehicle. Once the power was lost the vehicle seized. This happens on an actual interstate or railroad crossing YOU WILL HAVE FATALITIES!! This…
Sep 16, 2026Latches/locks/linkages
The contact owns a 2024 GMC Sierra 3500. The contact stated that the tailgate frequently opened independently while the vehicle was parked. The vehicle was previously repaired under NHTSA Campaign Number: 24V060000 (Latches/Locks/Linkages); however, the failure persisted. The vehicle was not diagnosed or repaired by a dealer or an independent mechanic. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 40,600.
Aug 14, 2026 · 40,600 miles
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.