2022 GMC Hummer EV

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.

Reported

Jun 2026

Incident date

Jun 2026

Mileage

Not provided

Outcome flags

None reported

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 be replaced at my expense although the same codes and part affected while under warranty. The component/part number needing replaced is part 85757074 (hybrid electric coolant heater module per dealership). There were several service vehicle warning lights and diagnostic codes were shared with dealership when dropped off for repairs.

Reported

Jan 2026

Incident date

Dec 2023

Mileage

Not provided

Outcome flags

None reported

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/seat mounting areas. The corrosion indicates prolonged moisture exposure inside the cabin. The dealership has attempted to repair this water intrusion issue approximately six (6) separate times, and the defect remains unresolved. First documented repair attempt: 03/14/2023 (issue presented to dealership for correction) Most recent repair attempt/out-of-service: 12/29/2025 to 01/06/2026
The vehicle has spent weeks at the dealership across these attempts, including time waiting for parts and work completion. Even after these repairs, the vehicle is still leaking and the corrosion is still present. 
Because this is a high‑voltage electric vehicle, I am concerned that water ingress and corrosion are compromising electrical wiring/connectors and safety systems located in/near the cabin floor and seat areas (including areas where sensors and connectors may be present). I am concerned this could increase the risk of electrical short, malfunction of safety systems (including airbag sensors), and in a worst case scenario a fire risk if moisture reaches sensitive electrical components. I can provide photos/videos of active water intrusion and corrosion and all repair orders upon request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Jan 2026

Incident date

Aug 2023

Mileage

Not provided

Outcome flags

None reported

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 and gave it back to me. The second time was a 10/1/2024. I was able to drive slowly to a parking lot, turn the car off, wait a bit and turn it back on which seemed to reset the warnings. Car is currently at a different dealer and they tell me that unless it happens while they are in the car, they cannot diagnose anything. If this were to happen while driving, it could be very dangerous as the Hummer is a very large heavy vehicle so to lose driving systems in motion is quite a scary thing. Having it happen while stopped is bad since the car doesn't operate normally, steering is erratic and the suspension controls non-existent which impacts safety even with speed limited to 36. The car is available to be inspected as needed.

Reported

Oct 2024

Incident date

Oct 2024

Mileage

Not provided

Outcome flags

None reported

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 and new issues have developed. I really wanted the truck and was gauged upon purchase by the dealership paying over $200k. My initial intention was to purchase for a family member whom is in need and could take advantage of the autonomous driving. Myself and my family are not even comfortable to the point my wife won't allow our children in the truck so we never took action of helping another member of the family

Reported

Apr 2023

Incident date

Apr 2023

Mileage

Not provided

Outcome flags

None reported

General Motors, LLC (GM) is recalling certain 2022 GMC Hummer EV vehicles. Taillight software can cause one or both rear taillights to become inoperative, or remain fully or partially illuminated. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Risk: A taillight that fails to illuminate or illuminates incorrectly may reduce the visibility of the vehicle, or communicate incorrect information to other drivers, increasing the risk of a crash.

Remedy: Dealers will inspect and replace as necessary, the left and/or right rear taillight assemblies. Owner notification letters were not required but all vehicles were remedied as of March 17, 2022. Owners may contact GMC customer service at 1-800-462-8782. GM's number for this recall is N222359830.

General Motors, LLC (GM) is recalling certain 2022 BrightDrop EV600 and 2022-2023 GMC Hummer EV Pickup electric vehicles. The high voltage battery pack enclosure may not be properly sealed, allowing water to enter the pack.

Risk: Water accumulation in the high voltage battery pack can cause a loss of drive power, increasing the risk of a crash.

Remedy: The remedy is currently under development. Owner notification letters were mailed April 13, 2023. Second letters will be sent once the remedy is available. Owners may contact EV Concierge at 1-833-HUMMER-EV, and BrightDrop Service Operations and Support at 1-888-987-4377. GM's number for this recall is N222380031.

General Motors, LLC (GM) is recalling certain 2022 GMC Hummer EV and 2023 Cadillac Lyriq vehicles. Certain connections within the high-voltage battery pack may be out of position or incorrectly welded, which can cause a loss of drive power.

Risk: A loss of drive power can increase the risk of a crash.

Remedy: Dealers will inspect and, if necessary, replace the high-voltage battery pack, free of charge. Letters explaining the safety risk were sent to owners January 5, 2024. Owner notification letters were mailed June 6, 2023. Owners may contact GM's Cadillac customer service at 1-800-458-8006 and the EV Concierge number: 1-833-HUMMER-EV (1-833-486-6373). GM's number for this recall is N232404441.