GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Master Electrical Component List

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Turn the ignition to the ON position.

Is the windshield washer pump ON?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3

Disconnect the windshield wiper/washer switch.

Does the washer turn OFF?

Go to Step 7

Go to Step 4

4

Disconnect the body control module (BCM) connector C3.

Does the washer turn OFF?

Go to Step 8

Go to Step 5

5

Disconnect the BCM connector C1.

Does the washer turn OFF?

Go to Step 9

Go to Step 6

6

Test for a short to battery positive voltage in the windshield washer pump control circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 10

7

Replace the windshield wiper/washer switch. Refer to Turn Signal Multifunction Switch Replacement .

Did you complete the replacement?

Go to Step 11

--

8

Repair a short to ground in the windshield washer switch signal circuit. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 11

--

9

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 11

--

10

Replace the windshield washer fluid pump. Refer to Washer Pump Replacement .

Did you complete the replacement?

Go to Step 11

--

11

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3