GM Service Manual Online
For 1990-2009 cars only

Test Description

The number below refers to the step number on the diagnostic table.

  1. Tests for an internal fault in the windshield wiper/washer switch.

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

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

Disconnect the windshield wiper/washer switch connector at the multifunction switch assembly.

Are the windshield washers always on?

Go to Step 4

Go to Step 5

4

Test the windshield washer pump control 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 7

Go to Step 6

5

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

Is the repair complete?

Go to Step 7

--

6

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

Is the repair complete?

Go to Step 7

--

7

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3