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GMC
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1997
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G 3500 1 Ton Van V8-5.7L VIN R
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Repair and Diagnosis
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Wiper and Washer Systems
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Testing and Inspection
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Initial Inspection and Diagnostic Overview
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Mechanical/Electrical Wiper/Washer System Diagnosis
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Wiper Washer Switch Test
Wiper Washer Switch Test
Disconnect harness connectors from
wiper motor
and perform the following switch tests using a digital voltmeter with ignition switch on.