When we haul our 5th wheel the dash says tailgate open constantly!! Its been to 3 dealers they cannot mock the issue hence the 5th wheel not being attached! This has been going on for months. Yesterday a new problem the tailgate was opening on its own while we were driving without the 5th wheel!! This morning we went to hook up the 5th wheel and the tailgate was closing on its own. It seems the latch on the driver's side is stuck in the closed position and the passenger side is in the open position!!! This truck was 100k after the 5th wheel was put in and air bags were put on.. wtf Chevy!!!