GMC Hummer EV Lemon Law

GMC recalled 2022 Hummer EV pickups (NHTSA 22V771; GM number N222380031) built between November 2021 and September 2022 because water can accumulate in the high-voltage battery pack and cause a loss of drive power. The root cause was improperly prepared battery-pack flanges that kept the urethane sealant from adhering; GM documented vehicles that would not start and one that lost propulsion while driving. The remedy is not a small fix — it involves replacing the entire high-voltage battery pack.

Owners have also reported software-driven failures: a battery control module that gets stuck in a start-up ("commissioning") state so the truck won't go to Ready or shows a persistent high-voltage system warning until it is reprogrammed, "propulsion power is reduced" messages, charging faults, and a separate taillight software problem that can leave the rear lights inoperative or stuck illuminated. As a first-generation electric truck, the Hummer EV has had more than its share of these growing pains — and they apply to the Hummer EV Pickup and the Hummer EV SUV alike.

A Hummer EV that keeps losing drive power, spends weeks waiting on a battery pack, or can't be reliably driven is a strong lemon candidate. If the problem can't be fixed after a reasonable number of repair attempts, or the vehicle is out of service for an extended time, California's Lemon Law may entitle you to a buyback, replacement, or cash settlement — with GM paying your attorney fees. Because of the Hummer EV's price, a buyback can be one of the largest in the lemon world.

A recall is not automatically a lemon — it's the manufacturer acknowledging a defect and offering a free repair. California's Lemon Law (the Song-Beverly Act) comes into play when a substantial defect can't be fixed after a reasonable number of attempts, or when your Hummer EV has been out of service for 30 or more cumulative days.

If your GMC Hummer EV qualifies, you may be entitled to a buyback (a refund of what you've paid, minus a mileage offset), a replacement vehicle, or a cash-and-keep settlement — and GMC pays your attorney fees on a successful claim, so pursuing your case costs you nothing out of pocket.