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GMC Truck
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1997
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K 2500 Truck 4WD V8-454 7.4L VIN J SFI
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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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Washer Pump Test
Washer Pump Test
NOTE
: Refer to image.
1.
If motor does not run or pump solvent, replace washer pump.
2.
If motor runs and pumps solvent, problem is in circuit board, motor park switch, or
wiper switch
. Refer to Wiper/Washer Switch Tests.