GM Service Manual Online
For 1990-2009 cars only

Lumbar Support System Check Buick

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Sit in the left front seat.
  2. Briefly hold the left lumbar switch in the IN position.

The left lumbar support moves in.

Lumbar Support Inoperative

2

Briefly hold the left lumbar switch in the OUT position.

The left lumbar support moves out.

Lumbar Support Inoperative

3

  1. Sit in the right front seat.
  2. Briefly hold the right lumbar switch in the IN position.

The right lumbar support moves in.

Lumbar Support Inoperative

4

Briefly hold the right lumbar switch in the OUT position.

The right lumbar support moves in.

Lumbar Support Inoperative

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

Lumbar Support System Check Oldsmobile

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Sit in the left front seat.
  2. Briefly operate each of the following lumbar switches:
    • UPPER Inflate
    • UPPER Deflate
    • LOWER Inflate
    • LOWER Deflate
  1. The seat air pump can be heard running.
  2. The appropriate section of the left front lumbar support inflates and deflates.

2

  1. Sit in the right front seat.
  2. Briefly operate each of the following lumbar switches:
    • UPPER Inflate
    • UPPER Deflate
    • LOWER Inflate
    • LOWER Deflate
  1. The seat air pump can be heard running.
  2. The appropriate section of the right front lumbar support inflates and deflates.

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