gmc Workshop Repair Guides

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Wiper Switch: Testing and Inspection
Wiper Will Not Shutoff

Front wiper switch continuity test

1.

Disconnect electrical connector from wiper motor, Fig. 19.

2.

Ground terminal 5, connect jumper cable between terminals 2 and 3 and apply battery voltage to terminal 1.

3.

If wipers continue to run, replace wiper motor. If wipers stop and park, replace wiper switch.

Wiper and Washer Systems > Sensors and Switches - Wiper and Washer Systems > Wiper Switch > Component Information > Testing and Inspection > Wiper Switch Test > Page 9731

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