GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Wiper/Washer Connector End Views

DEFINITION: The windshield wiper motor will not operate in any mode.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

  1. Turn ON the ignition.
  2. Attempt to operate the windshield wipers in all modes.

Are the windshield wipers inoperative in all modes?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3

  1. Disconnect the steering column harness connector.
  2. Connect a fused jumper wire from the windshield wiper switch high signal circuit terminal in the body harness connector half to ground.
  3. Turn ON the ignition.

Do the windshield wipers operate at high speed?

Go to Step 8

Go to Step 4

4

  1. Disconnect the windshield wiper motor connector.
  2. Connect a test lamp from the accessory voltage supply circuit terminal in the windshield wiper motor harness connector to ground.
  3. Turn ON the ignition.

Does the test lamp illuminate?

Go to Step 5

Go to Step 6

5

Connect a test lamp from battery positive voltage to the windshield wiper motor ground circuit terminal in the windshield wiper motor harness connector.

Does the test lamp illuminate?

Go to Step 10

Go to Step 7

6

Repair the accessory voltage supply circuit to the windshield wiper motor for an open or short to ground. Refer to Circuit Testing and Wiring Repairs .

Is the repair complete?

Go to Step 12

--

7

Repair the windshield wiper motor ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Is the repair complete?

Go to Step 12

--

8

Inspect for poor connections at the windshield wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 12

Go to Step 9

9

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

Is the repair complete?

Go to Step 12

--

10

Inspect for poor connections at the windshield wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 12

Go to Step 11

11

Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement .

Is the repair complete?

Go to Step 12

--

12

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3