GMC Hummer EV Lemon Law

Yes. The Song-Beverly Act applies equally to electric vehicles, including the Hummer EV. The Ultium battery system, electric drive units, and charging components are all covered under the manufacturer warranty. If these systems cannot be repaired after a reasonable number of attempts, your Hummer EV may qualify as a lemon just like any gasoline-powered vehicle.

If your Hummer EV consistently delivers substantially less range than the manufacturer's stated specifications due to a battery defect, this may constitute a nonconformity under the Song-Beverly Act. Normal range variation due to temperature and driving conditions is expected, but a persistent 20% or greater shortfall traced to a cell imbalance or pack defect is a legitimate warranty concern. Document your charging records and range readings at each service visit.

Under the Song-Beverly Act, you likely exceeded the 30-day out-of-service threshold after just one month. The manufacturer cannot escape liability because EV-specific parts are on backorder. You should send a formal demand letter to GMC citing the cumulative days out of service and request a buyback or replacement. In the meantime, GMC may be responsible for providing you with comparable transportation.

The Hummer EV charging system is covered under the bumper-to-bumper new vehicle limited warranty, typically 3 years or 36,000 miles, while the Ultium battery and electric drive components carry an 8-year or 100,000-mile warranty. For Lemon Law purposes under the Song-Beverly Act, any defect covered by any applicable manufacturer warranty qualifies. The longer battery warranty gives you an extended window to pursue a claim for battery and charging faults.