GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

Schematic Reference: Heated Seats 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 perform the Diagnostic System Check - Power Seat Systems?

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Go to Step 2

Go to Diagnostic System Check - Power Seat Systems

2

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

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

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

Go to Step 3

3

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

Did you find and correct the condition?

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Go to Step 7

Go to Step 4

4

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

Did you find and correct the condition?

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Go to Step 7

Go to Step 5

5

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?

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Go to Step 7

Go to Step 6

6

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

Did you complete the replacement?

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Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2