GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Momentarily press the left front power window switch DOWN past the first detent.

The left front window moves to the full open position. In order to stop the power window, press the left front window switch UP.

2

  1. Press the left front window switch UP.
  2. Press the left front window switch DOWN. Stop at the first detent.

The left front window moves up and down. The power window stops when the switch is released.

3

Operate all the power windows UP and DOWN from the left front power window switch.

Each power window moves up and down.

4

Operate each window from each individual window switch.

Each power window moves up and down.

5

  1. Place the rear lockout switch in the LOCK position.
  2. Repeat Step 3 and Step 4.
    • The rear power windows do not operate from their individual switches.
    • The rear power windows only operate from the left front window switch.

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