2024 GMC Sierra 1500 driver assistance problems

Filed Sep 1, 2026 · Driver assistance, Engine · CO

10/01/25: Vehicle brought to dealership for the 6.2L Engine Loss of Propulsion Recall. Engine Passed the Pico vibration test. Oil was changed from 0W-20 to 0W-40. Mileage was 29K. 06/17/26: Engine Seized at 43K miles. Was travelling 50 MPH up a Mtn Pass. Barely had enough momentum to roll to the right shoulder out of traffic. 07/07/26: New motor installed. Back to 0W/20 oil. Since ownership, I have to on a regular basis reset the Collison Warning from Seat Vibration to Beeps. It appears to reset back from Beeps to Seat Vibration every time there is an over the air software update. It might even just randomly reset. I cant tell for sure. I recently had a small backing accident were I was expecting the Beeps to alert me. I mentioned this to my auto insurance company. They told me this was not the first time they have heard of this type of situation.

Filed Jul 2, 2026 · Driver assistance, Engine · MA

The vehicle suffers from a persistent transmission defect including shuttering bucking slipping torque converter failure valve body failure twice metal debris improper down shifting chirping noises and related liability and safety issues. The vehicle has undergone multiple unsuccessful repair attempts at authorise GM dealerships. These repairs include torque converter replacement valve body replacement twice solenoid replacement fluid services software updates. The transmission problems have persisted despite these efforts and the vehicle has been out of service for more than 22 business days including a breakdown driving to Florida. I have filed a claim through GM but it seems like it just keeps getting pushed further and further away this is a serious safety issue as I fear for those driving around me and myself that I may cause an accident with the bucking slipping and failure to operate properly on the road.

Filed Jun 24, 2026 · Driver assistance · TX · crash

The contact owns a 2024 GMC Sierra 1500. While shifted in reverse, the back over prevention camera intermittently displayed a black screen accompanied by two failing camera symbols. During the most recent failure, the camera displayed a blank image, causing the vehicle to crash into the garage door, causing damage to the garage door. The failure was intermittent. No injuries were reported. A police report was not filed. Medical attention was not needed. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed Apr 18, 2026 · Driver assistance, Electrical · FL

My GMC sierra with 40000 miles The check engine light turn on and was steady on when driving on the highway I loose a power on the vehicle for a few seconds and almost a semi truck behind me hit me because I don’t have any power on the vehicle, I stop on a safe place and try to start the vehicle again immediately call dealer for appointment an start drive to home. The lady on General Motors say I can drive safe with my vehicle but I don’t feel safe because nothing on the onstar computer works the emergency button and GPS it’s not working at all.

Filed Apr 8, 2026 · Driver assistance · TX

“Service Driver Assist System” message appears every time I turn on my truck. Vehicle would randomly break when driving at slow speeds and show the forward collision alert even if no objects/ car are approaching or being approached. I am concerned about my safety because those sudden hard-breaks could cause an accident.

Filed Mar 22, 2026 · Driver assistance · MI

I am reporting a safety-related defect involving the blind zone alert system. The system failed repeatedly and required multiple service visits. Initial repairs did not resolve the issue. The dealership ultimately determined the cause to be a faulty wiring harness, which has now been replaced and appears to have corrected the issue. Safety Concern: Failure of a critical safety system Increased risk during lane changes Issue persisted across multiple repair attempts Additional Concern: The delay in identifying the defect required multiple service visits and resulted in significant out-of-pocket costs. Request: Investigation into: Wiring harness defects affecting safety systems Reliability of blind zone monitoring systems

Filed Dec 24, 2025 · Driver assistance, Electrical · LA

I purchased my 2024 GMC Sierra 1500 on July 4, 2024. Shortly after purchase, the vehicle began experiencing recurring electrical and electronic malfunctions affecting multiple safety and driver-assistance systems. These issues include power mirrors not consistently folding when the vehicle is locked, the digital speed (MPH) intermittently not displaying on the dashboard, driver seat memory not always setting upon entry, and blind spot warning indicators activating while driving when no vehicles or objects are present. More critically, the rear parking assist sensors do not function consistently and often fail to alert before contact with an object. I have backed into objects on multiple occasions before the sensors activated or without any warning, creating a safety risk while reversing. I first brought the vehicle to the dealership on January 13, 2025 for these issues, but they were not resolved. I purchased two GMC-branded trailer cameras in December 2024 that are advertised as compatible with this vehicle. On September 1, 2025, I returned to the dealership when the “invisible trailer” feature became inoperable. The trailer camera system frequently shows a black screen, cuts out intermittently, or fails to display an image. I returned again on September 11, 2025 due to continued failure of the invisible trailer feature and rear parking assist. The dealership kept my vehicle until December 2, 2025 (approximately one month), but the issues remain unresolved. I am scheduled to return again in January. These failures reduce rear visibility and compromise multiple safety systems. Despite repeated dealership repair attempts and extended service time, the problems persist, suggesting a defect involving the vehicle’s electrical system, sensors, software, or camera modules. I have photo and video documentation of these failures.

Filed Dec 16, 2025 · Brakes, Driver assistance · NY

My truck braked for a vehicle that was parked on the side of the road. This vehicle was not in my lane or hazardous in any way. I was traveling at highway speed 55 mph and truck braked to 30 mph approximately with no pre warning this has not happened before or after. The truck has about 26k on it.

Filed Dec 7, 2025 · Driver assistance, Lights · MA

The backup camera in the dark on this vehicle is unusable. Someone will eventually run someone over. I have added brighter lights everywhere on the back of the vehicle and the camera is still useless at night. The dealer told me it looked fine to them (they checked it in a lit garage). There are hundreds of complaints across all forums.

Filed Oct 27, 2025 · Driver assistance · MN

SuperCruise Repeatedly crosses Double yellow lines even with on coming traffic. Sometimes with SC active it will make an auto lane change but halfway through it will randomly swerve into either lane, or just simply turn off without warning. It started happening after a software update in May of 2025. We have provided GM and the dealership with Video evidence, along with the dealership mechanic replicating the problems. GM states that SC is operating as intended and that we are not to bring the truck in for service for that issue again. they denied buy back twice now.