Crazy rendezvous rear hatch switch

This one will kill you. RDV 05 rear hatch touch pad inop only works with key fob, repair touch pad..reinstall. works one day and fails the next. Perform analytical test on switch two codes one for low voltage in hatch one for low voltage in drivers door. Discover when shutting off car and opening drivers door and moving to the back of the car, hatch switch will operate once and then not operate for sixty seconds and then will operate once and sometimes twice before shutting down for another sixty seconds. You could perform this same procedure for nine days with the same results. HAS TO THE BCM RIGHT!!!!!!????