GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Heated/Cooled Seat Schematics

Connector End View Reference: Heated/Cooled Seat Connector End Views

DEFINITION: The heated seat cushion or seat back temperature can not be controlled or adjusted. The heated seat system can be turned ON and OFF.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Verify that the Rear Heated Seat Temperature Adjustment Inoperative complaint is present.

Does the rear heated seat system operate as described in the description and operation?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Test the heated seat element control circuit between the rear heated seat module and the seat cushion heating element for a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 7

Go to Step 4

4

Test the heated seat element control circuit between the rear heated seat module and the seat back heating element for a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 7

Go to Step 5

5

Inspect for poor connections at the harness connector of the rear heated seat module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 7

Go to Step 6

6

Replace the rear heated seat module. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2