GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Operate each power window UP and DOWN from the LH power window master switch.

Each power window operates quietly and smoothly, with no sticking or mechanical noises.

2

Operate each power window UP and DOWN only from the individual side door window switches.

Each power window operates quietly and smoothly, with no sticking or mechanical noises.

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