I have a 2021 3500HD and have been trying to program the garage door opener. I have no power to the garage door opener in the overhead Consol. None of the lights illuminate end it will not take programming. Has anyone had this issue?
Is there an adapter for the GMC? Camera works perfectly when powered inside vehicle from adapter. Trailer is pre-wired for Furrion but cameras will not pair. I have the side monitors as well, same story. 2019 GMC Sierra 1500