2015 Sierra Tailgate Lock issues

[Robert Schultz]

Is anyone experiencing issues with the factory tailgate lock? My key goes into the cylinder fine, turns about half-way and stops. The only thing that I have been able to do is flick (try to lock and unlock)  the key in the lock repeatedly until it opens. I don't think there is anything wrong with the cylinder of the lock as at some point it does unlock (after multiple key flicks....20+) BUT now it has me concerned at some point I may not be able to unlock the tailgate. With a locking box cover that can only be opened with the tailgate open essentially locks me out of my box.

[dsr611]

Warranty?  Take it to the dealer and let them check it out

[Robert Schultz]

off warranty, or yes I'd be back to the dealer. might have to go back anyway...