GM Service Manual Online
For 1990-2009 cars only

Pull the lever toward you to spray washer fluid on the windshield. The spray will continue until you release the lever. The wipers will run a few times. See Windshield Washer Fluid .

To squirt washer fluid on the rear window, twist the knob upward or downward as far as it will go. The knob automatically returns from these positions after you release it.

Caution: In freezing weather, do not use your washer until the windshield is warmed. Otherwise the washer fluid can form ice on the windshield, blocking your vision.