GM Service Manual Online
For 1990-2009 cars only

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Action

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Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Wiper/Washer Connector End Views

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 OFF.

Do the windshield wipers remain in the park position?

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

Go to Step 3

3

Are the windshield washers on along with the wipers?

Go to Washers Always On

Go to Step 4

4

  1. Turn OFF the ignition.
  2. Disconnect the harness connector of the windshield wiper motor.
  3. Turn ON the ignition, with the engine OFF.
  4. Connect a test lamp from the signal 1 circuit of the windshield wiper switch to a good ground.

Does the test lamp illuminate?

Go to Step 6

Go to Step 5

5

Connect a test lamp from the signal 2 circuit of the windshield wiper switch to a good ground.

Does the test lamp illuminate?

Go to Step 7

Go to Step 9

6

Test the windshield wiper switch signal 1 circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 12

Go to Step 8

7

Test the windshield wiper switch signal 2 circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 12

Go to Step 8

8

Inspect for poor connections at the harness connector of the windshield wiper/washer switch. 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 12

Go to Step 10

9

Inspect for poor connections at the harness connector of the windshield wiper motor module. 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 12

Go to Step 11

10

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

Did you complete the replacement?

Go to Step 12

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11

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

Did you complete the replacement?

Go to Step 12

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12

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3