Power Windows - Tailgate: Description

General Motors has one type of power tailgate window available only on "B" body station wagons. Window retracts into space between roof and headliner. Window is operated by an instrument panel switch and an external key operated control switch. A relay prevents window operation from instrument panel switch until ignition is turned to the "ON" position. Window is controlled by a gearbox type regulator, 12 volt reversible motor with an internal circuit breaker, guide cams and rollers, drive cable, and lift springs. Motor and regulator are mounted to the rear of spare tire well in right quarter area. During window movement, the motor drives a cable operating the regulator. In turn, the regulator gear pulls through it a spiral cable connected to the window guide cam. The spiral cable is stored in conduit below regulator. Upward travel of window is assisted by a lift spring mounted in roof above headliner.