Remove the door panel and check the wiring to the motor. Make sure it is clean and tight. If it is, then check to see if there is power to the motor. If there is power, then the motor is most likely going bad. If there is no power, check the switch and check the wiring between the door and door frame. I have seen the wiring break there and cause this to happen.
Friday, September 13th, 2013 AT 6:16 PM