Yesterday at the store I went to open my tailgate and it wouldn't open. The glass would open but the tailgate was stuck. I get it home and mess with it some more and when unlock is pushed the tailgate will unlock and lock itself over and over, when lock is pushed it locks like it should. I pulled the plastic cover off and can see the lever cycling back and forth lock/unlock when unlock is pushed. Has anyone had this happen or know whats going on? I hope its an easy fix and dont want to go to the stealership to pay 100 bucks just to diagnose it.