GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Press the lumbar switch in order to inflate the lumbar support.

The lumbar support inflates.

Lumbar Support Inoperative

2

Press the lumbar switch in order to deflate the lumbar support.

The lumbar support deflates.

Lumbar Support Inoperative

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