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.
    • LF heated seat heats on high.
    • LF heated seat heats on low.

LF heated seat does not heat on any switch selection.

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.
    • RF heated seat heats on high.
    • RF heated seat heats on low.

RF heated seat does not heat on any switch selection.

3

  1. Turn the ignition switch to the on position.
  2. Ensure the power heated switch is in the off position.

The power seats do not warm.

One or both seats warm at all times.

4

  1. Turn the ignition switch to the on position.
  2. Place the heated seat switch in any position.

The heated seat indicator will light.

The low or high heated seat indicator will not light.

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