GM Service Manual Online
For 1990-2009 cars only

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.

Pull the windshield wiper lever toward you to operate the windshield wipers. Washer fluid will squirt onto the windshield and the wipers will run for a few cycles to clear the windshield. For more wash cycles, pull the lever toward you and hold it there.