GM Service Manual Online
For 1990-2009 cars only

The windshield wipers are controlled by turning the band with on it.

(Mist): For a single wiping cycle, turn the band to mist. Hold it there until the wipers start. Then let go. The wipers will stop after one wipe. If more wipes are needed, hold the band on mist longer.

(Delay): The wiper speed can be set for a long or short delay between wipes. Turn the band to choose the delay time. The closer to the top of the lever, the shorter the delay.

(Low Speed): For steady wiping at low speed, turn the band away from you to the first solid band past the delay settings.

(High Speed): For high-speed wiping, turn the band further, to the second solid band past the delay settings.

(Off): Turns the wipers off.

Be sure to clear ice and snow from the wiper blades before using them. If the wipers are frozen to the windshield, carefully loosen or thaw them. If the blades do become worn or damaged, get new blades or blade inserts.