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 left heated seat switch in the LOW position.

The left seat heat turns on after about 1 minute.

2

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

The left seat heat temperature rises after about 1 minute.

3

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

The left seat should cool down and remain cool.

Heated Seat Always On

4

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

The right seat heat turns on after about 1 minute.

5

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

The right seat heat temperature rises after about 1 minute.

6

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

The right seat should cool down and remain cool.

Heated Seat Always On

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