GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Operate each window up and down from the left front power window switch.

Each window operates quietly and smoothly, with no sticking. The left front window rolls down all the way without the switch being held (express down feature).

2

Operate each window from the window's individual window switch.

Each window operates quietly and smoothly, with no sticking.

3

Place the window lockout switch in the LOCK position. Repeat steps 1 and 2. (Applies to Oldsmobile only).

The rear windows do not operate from their individual switches, but the rear windows operate from the left front power window switch.

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