GM Service Manual Online
For 1990-2009 cars only

The rear wiper/washer system has a one speed, permanent-magnet, depressed park wiper motor. The wiper motor drives a gear box, that in turn drives a wiper pivot that provides an oscillating output to a wet-arm wiper. The wiper is mounted on the liftgate and is serviced as a unit. No overhaul kits are available.

A controller module is also mounted on the liftgate. The module's printed circuit board controls all wiper motor functions as determined by the position of the wiper/washer switch.

The washer solvent container is part of the coolant recovery tank, which is mounted behind the right headlamp on the radiator support. The rear washer pump consists of a permanent-magnet motor and pump asembly. The rear washer pump mounts in the washer solvent container, next to and higher than the front washer pump. This mounting arrangement allows the rear washer pump to run out of solvent before the front washer pump.