GM Service Manual Online
For 1990-2009 cars only
WIPER: Turn this band to operate the windshield wipers.

MIST: Turn the band to MIST for a single wiping cycle. Hold it there until the wipers start. Then let go. The wipers will stop after one wipe. If you want more wipes, hold the band on mist longer.

OFF: Turn the band to OFF to turn off the windshield wipers.

LOW: Turn the band to LOW, for steady wiping at low speed.

HIGH: Turn the band to HIGH, for steady wiping at high speed.

DELAY: Turn the band away from you to one of the five sensitivity settings between OFF and LOW, to choose the delayed wiping cycle. The further the band is turned toward LOW, the shorter the delay will be. Use this setting for light rain or snow.

Remember that damaged wiper blades may prevent you from seeing well enough to drive safely. To avoid damage, be sure to clear ice and snow from the wiper blades before using them. If they're frozen to the windshield, carefully loosen or thaw them. If your blades do become damaged, get new blades or blade inserts.

Heavy snow or ice can overload your wipers. A circuit breaker will stop them until the motor cools. Clear away snow or ice to prevent an overload.