What owners reported to NHTSA, by component. One complaint can name several components.
Aug 5, 2026Structure, Unknown or other
Black hood center molding broke off, hit the windshield and blocked driver view.
Jun 30, 2026Structure
While driving, a strong wind blew and flipped up the black hood insert of Hummer EV truck. It can cause severe damage to the windshield and harm the driver and front passenger.
Jan 28, 2026Electrical system, Visibility/wiper
Visibility / Defogging / Defrosting issues are main safety concerns. Every winter for the last 3 years, the heater fails and blows only cold air. This is intermittent throughout the year, but recurring. With cold-weather driving conditions, it creates an unsafe driving experience when windshield and windows can't defog or defrost properly. The problem has been reported several times to the dealership and it was never fully resolved while under warranty. Each time I took the vehicle to the dealership for servicing with temporary adjustments. Dealership now states a heater module needs to…
Jan 6, 2026Electrical system, Air bags, Structure
Severe recurring roof water intrusion on 2022 GMC HUMMER EV; repeated failed repairs; interior rust/corrosion; safety concerns in high‑voltage EV. Vehicle: 2022 GMC HUMMER EV Edition 1
VIN: [XXX] Current mileage: ~12,000 miles
My vehicle has a recurring defect involving severe water intrusion into the cabin through/around the removable roof panels/roof sealing areas during rain. Despite repeated dealership repair attempts, the vehicle continues to leak. The ongoing water intrusion has caused visible corrosion (rust) on interior metal structures, including the floor area and seat rails/se…
Oct 22, 2024Suspension, Electrical system, Vehicle speed control
Same situation occurred twice. I was in the car at a red light. Car had been stopped for about a minute. Was on a slight decline, engine brake was engaged to hold car in position. Car was stationary completely. Suddenly tons of warning lights flash on the dash board 'One pedal driving unavailable', 'Service ESC', 'Service trailer brake system', 'Service active steering system', '4wd unavailable', service driver assist system , 'Speed limited to 36 mph'. First time this happened was June 2023. Dealer was unable to find the source of the problem but reported that the car was working fine…
Apr 20, 2023Engine, Fuel/propulsion system, Forward collision avoidance
My hummer has been nothing short of a nightmare. Been towed in for service and delivered to the dealer for repair 10 times now and the result is continuously the same problems. Having no date on battery replacement and constant warnings on the dash has brought to the point of it being unsafe for me and my family to utilize. It was recently in the GMC shop at Marquardt GMC for three weeks displaying over a dozen codes of issues. Due to lack of training the dealership mechanics are attempting to do repairs over the phone with GMC. Since getting it back last week all the codes are present again a…