GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Theft Deterrent Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Theft Deterrent

2

Attempt to start the engine.

Does the engine start?

--

Go to Step 3

Go to Diagnostic System Check - Engine Electrical in Engine Electrical

3

The SECURITY indicator lamp is on due to a malfunction in the instrument cluster. Refer to Diagnostic System Check - Instrument Cluster in Instrument Panel, Gauges and Console for further diagnosis and repair of the instrument cluster.

Is the action complete?

--

Go to Diagnostic System Check - Theft Deterrent

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