GM Released A Fix For Leaky GMC Hummer EV Roofs

As previously reported by GM Authority, the 2022 GMC Hummer EV Pickup was recalled late last year for an issue related to improperly sealed battery packs, which had the potential to allow water to enter the battery pack and cause a short circuit. Now, in another water-related issue, General Motors has released a fix for leaky Hummer EV roof panels.

On certain 2022 Hummer EV Pickup units, water may leak into the cabin at the center roof lift off panel insert or center roof lift off rear panel weatherstrip. To correct this issue, certified GM technicians have been instructed to replace both the center roof lift off panels. According to The General, it should take less than one hour to complete the fix.

It’s worth noting that GM has assigned this service update with identification number N222378440. In addition, General Motors has directed certified dealerships to not order the necessary parts for shelf stock due to limited initial parts availability.

As a reminder, the two variants of the GMC Hummer EV – which includes the Hummer EV Pickup and Hummer EV SUV – actually yield different outputs despite being based on the same vehicle platform, the GM BT1 platform. The Hummer EV Pickup Edition 1 produces 1,000 horsepower and 1,200 pound-feet of torque, while the Hummer EV SUV Edition 1 develops 830 horsepower and 1,200 pound-feet of torque. Both output figures are sourced from GM Ultium battery and GM Ultium Drive motor technologies, which power all four wheels.

Both Hummer EV variants are produced at the GM Factory Zero plant (previously known as the GM Detroit-Hamtramck plant) in Michigan. The Hummer EV Pickup began production in November 2021, while the Hummer EV SUV began production earlier this year.

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