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Home >> GMC Truck >> 1991 >> R 3500 P/U 2WD V8-454 7.4L >> Repair and Diagnosis >> Wiper and Washer Systems >> Testing and Inspection >> Front Wiper >> Without Pulse >> Wipers Inoperative In Delay Position

Wipers Inoperative In Delay Position

1. Defective pulse module.
2. Defective wiper switch.

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