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 LF heated seat switch to the HIGH position.
  3. Place the LF heated seat switch to the LOW position.
  1. LF heated seat heats on HIGH.
  2. LF heated seat heats on low.

Heated seat only operates in HIGH or LOW, does not operate at all, or stays on all of the time.

2

  1. Turn the ignition switch to the ON position.
  2. Place the RF heated seat switch to the HIGH position.
  3. Place the RF heated seat switch to the LOW position.
  1. RF heated seat heats on HIGH.
  2. RF heated seat heats on LOW.

Heated seat only operates in HIGH or LOW, does not operate at all, or stays on all of the time.

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