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Wiper/Washer Systems: Operation

The front wiper system activates immediately whenever switch is turned on. In INT 1 position, wipers cycle every 2 seconds. In INT 2 position, wipers cycle every 7 seconds, and in INT 3 position, every 12 seconds. In LOW speed, wipers cycle about 42-52 times per minute. In HIGH speed, wipers cycle about 61-73 cycles per minute on a wet windshield. When switch is pushed down to MIST position, wipers cycle once as long as switch is held down. When switch is in WASH position, wipers and washer pump activate within one second. Wipers cycle twice and washer pump remains on as long as switch is activated. When switch is released, wipers park after 2 cycles. With wiper switch set in LOW position, crank engine. Wipers should stop moving and start again once ignition switch is back in RUN position.

Fig 1: Identifying Front Wiper/Washer System
G98F00401Courtesy of GENERAL MOTORS CORP.