Gmc Hummer ev pickup Engine Problems
2 owner complaints filed with NHTSA across 2 model years.
Complaints by Year
Worst year: 2023. Best year: 2023.
Owner Reports
A representative sample of complaints filed with NHTSA.
Engine · 2023 1
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 c...
Engine · 2022 1
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 ...