According to GMC’s website, your limited warranty could be voided if the systems and parts under warranty are damaged by any of the following:
But there is some good news! Adding a lift kit, specifically, won’t necessarily void your entire warranty—it just means that if GMC believes that damage to your vehicle resulted from the lift kit, they will deny your claim under the warranty coverage. Anything not related to the lift kit will still be covered.
A licensed broker that offers end-to-end support, the Jerry app gathers affordable quotes, helps you switch plans, and can even help you cancel your old policy.