GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Move the LH lumbar switch in the UP and DOWN positions.

The LH lumbar support moves up and down.

Lumbar Support Does Not Move Up or Down

2

Move the LH lumbar switch in the IN and OUT positions.

The LH lumbar support moves in and out.

3

Move the RH lumbar switch in the UP and DOWN positions.

The RH lumbar support moves up and down.

Lumbar Support Does Not Move Up or Down

4

Move the RH lumbar switch in the IN and OUT positions.

The RH lumbar support moves in and out.

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