GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the instrument cluster diagnostic system check?

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Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

Did you perform the BCM diagnostic system check?

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Go to Step 3

Go to Diagnostic System Check - Body Control System in Body Control System

3

  1. Install a Scan Tool .
  2. Close all vehicle doors.
  3. Turn the ignition switch to the RUN position.
  4. WOW cluster ON and OFF.

Does the door ajar light toggle ON and OFF?

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Go to Step 4

Go to Step 5

4

  1. Using the Scan Tool .
  2. Turn the ignition switch to the RUN position.
  3. Enter into instrument cluster inputs.
  4. Open and close doors.

Does the door ajar input toggle on and off?

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System OK

Go to Diagnostic System Check - Body Control System in Body Control System

5

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

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