Re: rear hatch and flipper glass wont open
The liftgate lock motor has a limit switch which makes the circuit for the flip-up glas solenoid (when flip-up glas button is pressed). So as long as the lock motor is not in unlocked position, the flip-up glas solenoid can not be activated.
The liftgate lock motor is in paralel with the other lock motors (except the drivers door lock motor, which has its own circuit fed via the drivers door module) and is fed from the passengers door module. Since all other doors lock/unlock, most probably the liftgate lock motor is bad. You can lock/unlock it manually from the inside through the small, almost square, access panel on the inside of the gate. (attached picture shows you the components on the liftgate)