GM Service Manual Online
For 1990-2009 cars only
Table 1: Windshield Wipers Inoperative - All Modes
Table 2: Wipers Inoperative - One Mode
Table 3: Wipers Inoperative
Table 4: Wiper Inoperative - Rear
Table 5: Washer Inoperative - Rear

Windshield Wipers Inoperative - All Modes

Checks

Actions

The open or a short in the power supply circuit to the fuse F8.

Repair or replace the open or short in the power supply circuit to the fuse F8.

Fuse F8 is blown.

Replace the fuse F8.

Faulty wiper/washer switch

Replace the wiper/washer switch.

The circuit between the wiper/washer switch connector and the wiper relay is open or short.

Repair or replace the wiring harness.

The circuit between the fuse F8 and the wiper relay is open or short.

Repair or replace the wiring harness.

Faulty wiper relay

Replace the wiper relay.

The circuit between the wiper relay and the ground G201 is the open circuit or a short circuit.

Repair or replace the open circuit or a short circuit between the wiper relay and the ground G201.

The circuit between the wiper/washer switch and the wiper motor is the open circuit or a short circuit.

Repair or replace the wiring harness.

The circuit between the fuse F8 and the wiper motor is the open circuit or a short circuit.

Repair or replace the wiring harness.

The circuit between the wiper relay and the wiper motor is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty wiper motor

Replace the wiper motor.

The connection of the wiper linkage and the wiper motor is poor.

Completely tighten the nut and ball.

Wiper linkage is out of order.

Replace the wiper linkage.

Wipers Inoperative - One Mode

Checks

Actions

Faulty wiper/washer switch

Replace the wiper/washer switch.

The circuit between the wiper/washer switch and the wiper motor is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty wiper motor

Replace the wiper motor.

The circuit between the fuse F8 and the wiper relay is the open circuit or a short circuit.

Repair or replace the wiring harness.

The circuit between the fuse F8 and the wiper motor is the open circuit or a short circuit.

Repair or replace the wiring harness.

The circuit between the wiper/washer switch and the wiper relay is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty wiper relay

Replace the wiper relay.

The circuit between the wiper relay and the wiper motor is the open circuit or a short circuit.

Repair or replace the wiring harness.

Poor ground G201

Repair or replace the wiring harness.

Wipers Inoperative

Checks

Actions

The open or a short in the power supply circuit to the fuse F9.

Repair or replace the open or a short in the power supply circuit to the fuse F9.

Fuse F9 is blown.

Replace the fuse.

The circuit between the fuse F9 and the wiper/washer switch is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty wiper/washer switch

Replace the wiper/washer switch.

The circuit between the wiper/washer switch and the wiper relay is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty wiper relay

Replace the wiper relay.

The circuit between the wiper relay and ground G201 is the open circuit or a short circuit.

Repair or replace the wiring harness.

The circuit between the wiper/washer switch and the windshield washer pump is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty windshield washer pump

Replace the windshield washer pump.

Poor ground G201

Repair or replace the wiring harness.

Wiper Inoperative - Rear

Checks

Actions

The open or a short in the power supply circuit to the fuse F9

Repair or replace the open or a short in the power supply circuit to the fuse F8.

Fuse F9 is blown.

Replace the fuse F9.

The circuit between the fuse F9 and the wiper/washer switch is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty wiper/washer switch

Replace the wiper/washer switch.

The circuit between the wiper/washer switch and the rear window wiper motor is the open circuit or a short circuit.

Repair or replace the wiring harness.

The circuit between the fuse F9 and the rear window wiper motor is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty rear window wiper motor

Replace the rear window wiper motor.

Poor ground G403

Repair or replace the wiring harness.

The circuit between the wiper/washer switch and the windshield washer pump is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty windshield washer pump

Replace the windshield washer pump.

Poor ground G102

Repair or replace the wiring harness.

Washer Inoperative - Rear

Checks

Actions

The circuit between the wiper/washer switch and the windshield washer pump is the open circuit or a short circuit.

Repair or replace the wiring harness.

Faulty windshield washer pump

Replace the windshield washer pump.

Poor ground G102

Repair or replace the wiring harness.