GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Turn ignition switch to ON.
  2. Turn the front Wiper/Washer switch to the LO position.

Wipers operate at low speed.

2

Turn the front Wiper/Washer switch to the HI position.

Wipers operate at high speed.

3

Turn the front Wiper/Washer switch to the OFF position.

Wiper blades return to the park position and stop.

    •  Wipers Always On

4

Turn the Wiper/Washer switch to the INT position.

Wipers operate at approximately 6 second intervals.

Wipers Delay Mode Inoperative

5

Pull the front Wiper/Washer switch toward the drivers seat.

Front washer pump operates and wipers complete at least one full sweep.

Washers Inoperative

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