GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the VTD Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Theft Deterrent

2

Was the Instrument Cluster System Check performed?

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Go to Step 3

Go to Diagnostic System Check - Instrument Cluster

3

  1. Turn the ignition switch to the ON position.
  2. With a scan tool select Instrument Panel Cluster, Special Functions, and command the Security message ON.

Does the Security message turn ON and OFF when commanded?

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Go to Diagnostic System Check - Body Control System

Go to Step 4

4

Replace the Instrument Cluster. Refer to Instrument Cluster Replacement

Is the repair complete?

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Diagnostic System Check - Instrument Cluster

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