GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Operate the heated seat switch.

Does the heated seat switch indicator illuminate when the heated seat switch is operated?

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

Go to Step 3

3

Does the heated seat increase in temperature when the heated seat switch is activated?

Go to Step 4

Go to Heated Seat Inoperative

4

Replace the heated seat switch.

Did you complete the replacement?

Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2