GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Turn the ignition switch to the ON position.
  2. Place the LH heated seat switch in the LOW position.

The LH seat heat comes on after about one minute.

2

Place the LH front heated seat switch in the HIGH position.

The LH seat heat temperature rises after about one minute.

3

Place the LH front heated seat switch in the OFF position.

The LH seat should cool down and remain cool.

Heated Seat Always On

4

Place the RH front heated seat switch in the LOW position.

The RH seat heat comes on after about one minute.

5

Place the RH front heated seat switch in the HIGH position.

The RH seat heat temperature rises after about one minute.

6

Place the RH front heated seat switch in the OFF position.

The RH seat should cool down and remain cool.

Heated Seat Always On

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