GM Service Manual Online
For 1990-2009 cars only

To use this feature the ignition must be turned to ON/RUN. Pull the windshield washer/wiper lever toward you to spray washer fluid on the windshield.

The spray continues until the lever is released. The wipers will run a few times and either stop or will resume at the speed being used previously. See Windshield Washer Fluid for information on filling the windshield washer fluid.

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.