GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics

Connector End View Reference: Power 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 review the Heated Seat Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Seats

2

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

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

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Test the heated seat element control circuit of the seat heating elements for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 6

Go to Step 4

4

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

Did you find and correct the condition?

Go to Step 6

Go to Step 5

5

Replace the heated seat module. Refer to Front Seat Heater Control Module Replacement .

Did you complete the replacement?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2