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

1

Did you review the Rear Wiper/Washer System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Wiper/Washer Systems

2

  1. Turn the ignition ON.
  2. Turn the rear window wiper/washer switch to the OFF position.

Is the rear window wiper always ON?

Go to Step 3

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

3

  1. Disconnect the rear window wiper module connector.
  2. Connect a test lamp from the rear window wiper switch signal circuit terminal in the harness connector to ground.

Does the test lamp illuminate?

Go to Step 5

Go to Step 4

4

Connect a test lamp from the rear window washer switch signal circuit terminal in the rear wiper motor harness connector to ground.

Does the test lamp illuminate?

Go to Step 6

Go to Step 9

5

  1. Disconnect the rear window wiper/washer switch connector.
  2. Test the rear window wiper switch 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 11

Go to Step 7

6

  1. Disconnect the rear window wiper/washer switch connector.
  2. Test the rear window washer switch 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 11

Go to Step 7

7

Inspect for poor connections at the rear window 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 11

Go to Step 8

8

Replace the rear window wiper/washer switch. Refer to Rear Window Wiper and Washer Switch Replacement .

Is the repair complete?

Go to Step 11

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9

Inspect for poor connections at the rear window wiper module. 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 11

Go to Step 10

10

Replace the rear window wiper module. Refer to Rear Window Wiper Motor Replacement .

Is the repair complete?

Go to Step 11

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11

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3