The liftgate window release circuit operates only when the vehicle is in the PARK or NEUTRAL position in order to deny release of the liftgate while the vehicle is moving. The system incorporates a liftgate release switch, liftgate release motor, and the park/neutral position switch. Voltage to the switch is supplied through CKT 640 (ORN) from the CIG LTR fuse. When the liftgate release switch is depressed, voltage is supplied through CKT 1576 (BLK) to the liftgate release motor. Ground for the liftgate release motor comes from the G105 to the park/neutral position switch through CKT 150 (BLK). If the transmission is in the PARK or NEUTRAL position, the ground path is opened through CKT 1737 (YEL) to the liftgate release motor. This releases the liftgate.

On vehicles equipped with remote keyless entry, the liftgate release switch can be bypassed by actuating the button on the remote transmitter. This signals the remote control door lock receiver to supply voltage to the liftgate release motor.