GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

DEFINITION: The windshield wipers are inoperative at high speed only.

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 the ignition on.
  2. Turn the windshield wiper/washer switch to the high speed position.

Do the high speed windshield wipers operate normal?

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

Go to Step  3

3

  1. Disconnect the windshield wiper motor connector.
  2. Connect a test lamp from the wiper motor high speed supply circuit terminal in the wiper motor connector to ground.
  3. Turn the ignition on.
  4. Turn the windshield wiper/washer switch to the high speed position.

Does the test lamp illuminate?

Go to Step  6

Go to Step  4

4

Test and repair the wiper motor high speed supply circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 7

Go to Step  5

5

Replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement - On Vehicle in Steering Wheel and Column-Tilt.

Is the repair complete?

Go to Step 7

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6

Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement .

Is the repair complete?

Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3