my rear hatch will not open

Hello, This is likely a bad actuator. I understand that sounds funny, but the actuator motor is probably functioning without releasing the latch. If you remove the rear panel from inside of the hatch, there is a release to open the hatch manually. Once open, close the latch mechanism manually using a screwdriver, and watch to see if the actual latch moves when you press the release button. Chances are the actuator is running without working, and you will not see the latch release.