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 RUN position.
  2. Press the LH heated seat switch.
    • The high heat LED on the LH heated seat switch turns on.
    • The LH seat heat turns on at the high level in about one minute.

2

Press the LH heated seat switch.

    • The high heat LED turns off.
    • The low heat LED on the LH heated seat switch turns on.
    • The LH seat heat temperature lowers to the low level in about one minute.

3

Press the LH heated seat switch.

    • The low heat LED on the LH heated seat switch turns off.
    • The LH seat heat turns off.
    • The LH seat cools down.

Heated Seat Always On

4

    • Turn the ignition switch to the RUN position.
    • Press the RH heated seat switch.
    • The high heat LED on the RH heated seat switch turns on.
    • The RH seat heat comes on at the high level in about one minute.

5

Press the RH heated seat switch.

    • The high heat LED turns off.
    • The low heat LED on the RH heated seat switch turns on.
    • The RH seat heat temperature lowers to the low level in about one minute.

6

Press the RH heated seat switch.

    • The low heat LED on the RH heated seat switch turns off. The RH seat heat turns off.
    • The RH seat cools down.

Heated Seat Always On

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