GM Service Manual Online
For 1990-2009 cars only

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Schematic Reference: Symptoms - Wiper/Washer Systems

Connector End View Reference: Wiper/Washer Connector End Views

1

Did you perform the Wiper/Washers Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Wiper/Washer

2

  1. Turn the ignition ON, with the engine OFF.
  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

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

Does the test lamp illuminate?

Go to Step 6

Go to Step 4

4

Connect a test lamp from the signal 1 circuit of the wiper switch to a good ground.

Does the test lamp illuminate?

Go to Step 7

Go to Step 5

5

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

Does the test lamp illuminate?

Go to Step 8

Go to Step 10

6

Test the high speed circuit of the windshield wiper switch 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 13

Go to Step 9

7

Test the signal 1 circuit of the windshield wiper switch 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 13

Go to Step 9

8

Test the signal 2 circuit of the windshield wiper switch 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 13

Go to Step 9

9

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 13

Go to Step 11

10

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 13

Go to Step 12

11

Replace the windshield wiper/washer switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column.

Did you complete the repair?

Go to Step 13

--

12

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

Did you complete the repair?

Go to Step 13

--

13

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3