During the morning drive, while in one pedal driving mode, the need to apply more brake due to a quick change of traffic lights occurred. The brakes felt hard and the vehicle did not feel like it was stopping as quickly as it normally would. When I parked the vehicle and exited no warning lights or other items were shown on the dash. Once I got back in the vehicle, a MIL light was lit and the "Service Brake Assist" message was displayed. With the vehicle running, it would not move either forward or reverse. Multiple attempts were made to move the vehicle, it was blocking a flow of truck traffic at the business. No movement occurred. OnStar was contacted for road side assistance and a Wrecker was dispatched. The vehicle was taken to the dealership for inspection and repair. Still waiting on what the issue with the vehicle is. I felt my personal safety was at risk for the slow braking/hard pedal and also when parked and the vehicle immobilized.
No injuries · No fire · No crash
I am reporting a safety defect involving my 2025 GMC Hummer EV 3X (VIN: [XXX]). On XXX at approximately 18,880 miles, I first presented the vehicle for steering/alignment, suspension, and handling concerns. As of this complaint, the vehicle has approximately 26,840 miles. I have driven nearly 8,000 miles while repeatedly reporting unresolved safety concerns and transporting my two children (ages [XXX] and [XXX]) because I had no practical transportation alternative. Following warranty repairs, including rear control arm replacement, the vehicle developed a severe pull to the right that did not exist before repair. It requires constant steering correction to remain in its lane, and Super Cruise can no longer reliably maintain lane position. Premature and abnormal tire wear has continued throughout the unresolved alignment condition. The vehicle has undergone six warranty-related service events at two authorized GM dealerships. Despite repeated repair attempts and two direct escalations to General Motors requesting repurchase, the only resolution offered has been additional diagnostics and repair attempts. A courtesy loaner was not offered until the sixth service event, after months of unsuccessful repairs, thousands of miles of continued operation, lost wages, and repeated travel. The vehicle also continues to experience water intrusion despite warranty repairs. Rainwater enters the passenger compartment, leaving a persistent musty odor and raising concerns regarding mold, mildew, occupant health, and interior deterioration. I have filed a Georgia Lemon Law claim after exhausting GM’s internal process. I also documented my experience publicly. Posts received approximately 17,500, 48,900, 60,100, and 24,800 views. Many GM owners described similar repair experiences and unresolved INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
No injuries · No fire · No crash
Under full acceleration on flat, dry pavement, the vehicle suddenly pulls hard to the right or left without any steering input. The steering wheel does not move, but the vehicle abruptly changes direction, requiring immediate counter‑steering to avoid losing control. This happens every time under full acceleration and has been confirmed by two GMC dealers. GM Corporate states this is “normal,” but the behavior is unsafe and could cause a crash. Two GMC dealers reproduced the issue and confirmed the sudden directional pull under full acceleration, but both stated it is ‘normal.’ GM Corporate also acknowledged the behavior but claims it is within manufacturing tolerance. The vehicle still pulls violently to one side under full acceleration, creating a serious safety risk.
No injuries · No fire · No crash
While operating my 2024 GMC Hummer EV at a low speed in a school zone, I came to a complete stop at a stop sign and began making a left turn. As I initiated the turn, the steering wheel suddenly locked and became unresponsive. I was unable to turn the wheel back to the right or regain control of the vehicle’s direction. At the same time, the vehicle did not respond as expected when attempting to stop. Because I could not steer or properly control the vehicle, I collided with another vehicle. The impact with the other vehicle is what ultimately brought my vehicle to a stop. During the incident, multiple warning messages appeared on the dashboard, including a message indicating: “Service Steering System.” My vehicle sustained minimal damage due to its height (a bent side step), however the other vehicle sustained damage. Police responded to the scene and a report was filed. I was NOT issued a citation. (see report attached) The vehicle has since been towed to Northwest Hills Chevy/GMC in Torrington CT for inspection by the GMC manufacturer. This incident raises serious safety concerns, as the sudden loss of steering control at low speed could have resulted in significantly more severe consequences under different circumstances. I was in a school zone at dismissal time going to pick up my son. This appears to be a potential mechanical or electronic steering system failure. I believe this represents a serious safety defect that should be investigated to prevent similar incidents.
Charge port door on vehicle will not open regardless of what you do.
No injuries · No fire · No crash