GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Theft Deterrent System Schematics

1

Did you perform A Diagnostic System Check-Theft Deterrent?

Go to Step 2

Go to Diagnostic System Check - Theft Deterrent

2

  1. Observe the instrument cluster.
  2. Turn the ignition switch to the ON position.

Does the SECURITY indicator illuminate during the bulb-check?

System OK

Go to Step 3

3

Replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages and Console.

Did you complete the repair?

Go to Step 4

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4

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2