GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

1

Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Wiper/Washer Systems

2

  1. Turn ON the ignition, with the engine OFF.
  2. Turn the windshield wiper/washer switch to LO.
  3. Turn the windshield wiper/washer switch to HI.
  4. Turn OFF the windshield wiper/washer switch.

Do the windshield wipers operate properly?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Disconnect the windshield wiper/washer switch connector.

Do the windshield wipers stop?

Go to Step 5

Go to Step 4

4

Test the following circuits for a short to voltage:

    • windshield wiper switch on signal circuit.
    • windshield wiper switch low/pulse signal circuit
    • windshield wiper motor high speed circuit

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 6

5

Inspect for a poor connection at the windshield wiper/washer switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 7

6

Inspect for a poor connection at the windshield wiper motor connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 8

7

Replace the windshield wiper/washer switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column - Tilt.

Did you complete the replacement?

Go to Step 9

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8

Replace the windshield wiper motor cover. Refer to Wiper Motor Cover Replacement .

Did you complete the replacement?

Go to Step 9

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9

Operate the windshield wiper/washer system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3