GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Turn the ignition switch to the ON position.
  2. Press and hold the rear wiper/washer switch.
  1. The rear washer pump operates.
  2. The rear wiper operates.

2

Release the rear washer switch.

The following components stop in the PARK position:

  1. The washer pump
  2. The rear wiper

Wipers Blades Do Not Park

3

Move the rear wiper switch to the DELAY position.

The rear wiper should operate with a delay between cycles.

Rear Wiper Delay Mode Inoperative

4

Move the rear wiper switch to the ON position.

The rear wiper operates.

Wipers On Mode Inoperative - Rear

5

Move the rear wiper switch to the OFF position.

The rear wiper completes the cycle and returns to the PARK position.

Rear Wiper Always On

6

Move the rear wiper switch through both positions, pausing to make sure that the rear wiper operates in both positions.

The rear wiper should operate in both positions.

Rear Wiper Inoperative

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.