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 Circuit Description and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Wiper/Washer Systems

2

Turn the ignition on.

Are the windshield washers always on?

Go to Step 3

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

3

  1. Disconnect the steering column connector C201.
  2. Turn the ignition on.

Are the windshield washers always on?

Go to Step 4

Go to Step 7

4

  1. Disconnect the windshield wiper motor connector.
  2. Turn the ignition on.

Are the windshield washers always on?

Go to Step 6

Go to Step 5

5

Test and repair the windshield wiper switch pulse delay signal 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 10

Go to Step 9

6

Repair the windshield washer pump control circuit for a short to voltage. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 10

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7

Test and repair the windshield wiper switch pulse delay signal circuit in the steering column harness 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 10

Go to Step 8

8

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

Is the repair complete?

Go to Step 10

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9

Replace the windshield wiper motor module. Refer to Windshield Wiper System Module Replacement .

Is the repair complete?

Go to Step 10

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10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3