Need help with 2015 Yukon Denali door not locking?
My 2015 Yukon Denali back passenger door wont unlock w/ the fob, passive
unlock or with the power door locks. This is the only door giving me
problems like this & it just started. At the same time, i also got a service alert
on my dash pertaining to the Theft Deterrent System & the Security Light
also came on. All lights are off now but i don't know for how long but the
passenger rear door still won't unlock. Any suggestions to try before taking it
in to the GM Dealership & paying out the nose?