GM Service Manual Online
For 1990-2009 cars only

The rear wiper and rear wash button is located on the instrument panel above the climate control system.

(Rear Wiper/Washer): Press to wash and wipe the rear window. The rear window washer uses the same reservoir as the windshield washer. Check the windshield washer reservoir level if the front windshield can be worked, but no fluid is sprayed when the rear washer is activated. See Windshield Washer Fluid .

(Delay): Press to turn the delayed wiping on or off.