GMC Sierra HD Lemon Law

Yes. The existence of a Technical Service Bulletin actually supports your lemon law claim because it demonstrates that GMC is aware of the defect. Under the Song-Beverly Act, you are entitled to a vehicle that conforms to the manufacturer's warranty regardless of whether a TSB has been issued. If the TSB repair does not resolve the issue, each subsequent attempt strengthens your case.

The Song-Beverly Act covers vehicles used primarily for personal, family, or household purposes. If your Sierra HD is used primarily for commercial purposes, it may fall outside the Act's protection. However, if the truck has a gross vehicle weight under 10,000 pounds and is also used for personal purposes, you may still qualify. Consulting with a lemon law attorney to evaluate your usage pattern is advisable.

Yes. Under the Song-Beverly Act, every calendar day your Sierra HD is out of service for repair counts toward the 30-day threshold, including days the vehicle sits at the dealership waiting for back-ordered parts. The manufacturer cannot avoid liability simply because parts are unavailable. You should request written documentation from the dealer confirming the dates your vehicle was in their possession.

Under the Song-Beverly Act, the consumer has the right to choose between a refund and a replacement vehicle. If you choose a replacement, GMC must provide a new vehicle that is substantially identical to your Sierra HD. The replacement must be of comparable value, and you should not have to pay any additional costs beyond the mileage offset deducted from the original vehicle.