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 in Vehicle DTC Information

2

  1. Turn the ignition switch ON.
  2. Turn the windshield wiper/washer switch through all the switch positions.

Does the windshield wiper/washer system operate normally?

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

Go to Step 3

3

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

Does the test lamp illuminate?

Go to Step 4

Go to Step 9

4

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

Does the test lamp illuminate?

Go to Step 5

Go to Step 10

5

  1. Connect the test lamp from the windshield wiper switch signal 2 circuit terminal in the windshield wiper motor harness connector to ground.
  2. Turn ON the ignition.
  3. Press the windshield washer switch.

Does the test lamp illuminate?

Go to Step 7

Go to Step 6

6

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

Does the test lamp illuminate?

Go to Step 8

Go to Step 11

7

Inspect for poor connections at the windshield wiper motor. 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 14

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 in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 13

9

Repair the windshield wiper motor accessory voltage supply circuit for an open or short to ground. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Is the repair complete?

Go to Step 14

--

10

Repair the windshield wiper motor ground circuit for an open or high resistance. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Is the repair complete?

Go to Step 14

--

11

Repair the windshield wiper/washer switch accessory voltage supply circuit for an open or high resistance. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Is the repair complete?

Go to Step 14

--

12

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

Is the repair complete?

Go to Step 14

--

13

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

Is the repair complete?

Go to Step 14

--

14

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3