GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Content Theft Deterrent System Check performed?

--

Go to Step 2

Go to Vehicle Theft Deterrent (VTD) System Check

2

Inspect for powertrain control module (PCM) diagnostic trouble codes (DTCs). Refer to in Engine Controls - 2.5L (LB8) and 3.0L (L46).

Are there any PCM DTCs?

--

Go to Step 3

--

3

Did you perform the BCM Diagnostic System Check?

--

Go to Step 4

Go to Diagnostic System Check - Body Control System

4

The SECURITY indicator lamp does not operate correctly because of a malfunction in the instrument panel cluster (IPC). Refer to Diagnostic System Check - Instrument Cluster in Instrument Panel, Gauges and Console.

Is the repair complete?

--

Go to Vehicle Theft Deterrent (VTD) System Check

--