GM Service Manual Online
For 1990-2009 cars only

Power Windows System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Turn ON the ignition switch.
  2. Operate the LH window UP and then DOWN using the LH window switch.

The LH window will move up and down.

2

Operate the RH window UP and then DOWN using the RH window switch.

The RH window will move up and down.

3

Operate the RH window UP and then DOWN using the LH window switch.

The RH window will move up and down.

4

To activate the express-down window feature (if equipped), momentarily press and hold the RH or LH window switch AUTO button for less than one-third of a second and release.

The RH or LH window will move all the way down until the AUTO switch is pressed again.

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