GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics

Connector End View Reference: Power Seat Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

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Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Verify that the Heated Seat Switch Low Indicator Malfunction complaint is present.

Does the heated seat switch low indicator operate normally?

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

Go to Step 3

3

Turn ON the ignition, with the engine OFF.

Is the Low Heat Indicator of the heated seat switch always on?

--

Go to Step 6

Go to Step 4

4

  1. Turn ON the heated seat to the low temperature position.
  2. Measure the voltage from the heated seat low temperature indicator control circuit of the heated seat switch to a good ground.

Does the voltage measure within the specified range?

2.00-5.50 V

Go to Step 8

Go to Step 5

5

Test the heated seat low temperature indicator control circuit of the heated seat module for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 11

Go to Step 6

6

Test the heated seat low temperature indicator control circuit of the heated seat module for a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 11

Go to Step 7

7

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 11

Go to Step 9

8

Inspect for poor connections at the harness connector of the heated seat switch. 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 11

Go to Step 10

9

Replace the heated seat module. Refer to Control Module References in Computer/integrating Systems for replacement, setup and programming.

Did you complete the replacement?

--

Go to Step 11

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10

Replace the heated seat switch. Refer to Heated Seat Switch Replacement .

Did you complete the replacement?

--

Go to Step 11

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11

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2