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: Rear wiper is always ON.

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 wiper/washer switch to the OFF position.

Is the rear wiper always on?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3

  1. Turn the ignition OFF.
  2. Disconnect the rear wiper/washer switch.
  3. Turn the ignition ON.

Is the rear wiper always on?

Go to Step 4

Go to Step 5

4

  1. Turn the ignition OFF.
  2. Disconnect the rear window wiper module.
  3. Turn the ignition ON.

Test the rear wiper switch delay/on signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs .

Did you find and correct the condition?

Go to Step 9

Go to Step 7

5

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

Did you find and correct the condition?

Go to Step 9

Go to Step 6

6

Replace the rear wiper/washer switch. Refer to Console Replacement .

Is the repair complete?

Go to Step 9

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7

Inspect for poor connections at the window wiper module-rear. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

Go to Step 9

Go to Step 8

8

Replace the window wiper module-rear. Refer to Liftgate Wiper Motor Replacement .

Is the repair complete?

Go to Step 9

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9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3