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. Press the LH front heated seat switch.

The LH front heated seat high heat LED turns on. The LH front heated seat heats on HIGH in about 90 seconds.

2

Press the LH front heated seat switch.

The LH front heated seat low heat LED turns on. The LH front heated seat temperature lowers to LOW.

3

Press the LH front heated seat switch.

The LH front heated seat low heat LED turns off. The LH front heated seat turns off and begins to cool.

Heated Seat Always On

4

Press the RH front heated seat switch.

The RH front heated seat high heat LED turns on. The RH front heated seat heats on HIGH in about 90 seconds.

5

Press the RH front heated seat switch.

The RH front heated seat low heat LED turns on. The RH front heated seat temperature lowers to LOW.

6

Press the RH front heated seat switch.

The RH front heated seat low heat LED turns off. The LH rear heated seat turns off and begins to cool.

Heated Seat Always On

7

Press the LH rear heated seat switch.

The LH rear heated seat high heat LED turns on. The LH rear heated seat heats on HIGH in about 90 seconds.

8

Press the LH rear heated seat switch.

The LH rear heated seat low heat LED turns on. The LH rear heated seat temperature lowers to LOW.

9

Press the RH front heated seat switch.

The RH front heated seat low heat LED turns off. The RH front heated seat turns off and begins to cool.

Heated Seat Always On - Rear

10

Press the RH rear heated seat switch.

The RH rear heated seat high heat LED turns on. The RH rear heated seat heats on HIGH in about 90 seconds.

11

Press the RH rear heated seat switch.

The RH rear heated seat low heat LED turns on. The RH rear heated seat temperature lowers to LOW.

12

Press the RH rear heated seat switch.

The RH rear heated seat low heat LED turns off. The RH rear heated seat turns off and begins to cool.

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