GMC Hummer EV Pickup

While driving on a public road, the vehicle suddenly shut down and rebooted itself. Motive power was lost during the event. This has happened at least a dozen times during normal driving, including while transporting a child. Video of an occurrence was recorded. The vehicle is a 2025 GMC Hummer EV with approximately 10,400 miles and has been in service about eight months. This creates a serious safety risk. A sudden loss of propulsion and system reboot while moving can leave the driver unable…

While traveling with my wife and two toddlers over the July 4th holiday weekend, the 12 volt battery on my 2025 GMC Hummer EV failed completely at approximately 7,500 miles and five months of ownership. The vehicle would not accept a jump start and was disabled where it sat, stranding my family. AAA installed a replacement 12 volt battery roadside at a cost of $600. Following the battery replacement, a Service High Voltage System warning appeared on the dash and remained on, and the air…

While traveling with my wife and two toddlers over the July 4th holiday weekend, the 12 volt battery on my 2025 GMC Hummer EV failed completely at approximately 7,500 miles and five months of ownership. The vehicle would not accept a jump start and was disabled where it sat, stranding my family. AAA installed a replacement 12 volt battery roadside at a cost of $600. Following the battery replacement, a Service High Voltage System warning appeared on the dash and remained on, and the air…

While traveling with my wife and two toddlers over the July 4th holiday weekend, the 12 volt battery on my 2025 GMC Hummer EV failed completely at approximately 7,500 miles and five months of ownership. The vehicle would not accept a jump start and was disabled where it sat, stranding my family. AAA installed a replacement 12 volt battery roadside at a cost of $600. Following the battery replacement, a Service High Voltage System warning appeared on the dash and remained on, and the air…

Black hood center molding broke off, hit the windshield and blocked driver view.

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.

My 2023 GMC Hummer EV 3X has experienced repeated thermal-protection failures in the high-voltage battery and drive-motor cooling system, causing the vehicle to enter limp mode and drop to as low as 12 mph without warning. Stored fault codes: P0C12, P0C13, P2EE0, P2EE1 (battery and drive-unit overheating). A sudden, unannounced drop to 12 mph in a 9,000-lb EV is a serious safety hazard — on highways it creates rear-end collision risk, in intersections it leaves the vehicle stranded in traffic,…

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…

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…

I was driving down the street and suddenly lost all motive Power, vehicle became difficult to control. I have a video. The car also made a grinding feeling and very loud whining noise