Did you perform the Theft Deterrent Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Theft Deterrent

1. Perform the theft deterrent re-learn procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.
2. Attempt to start the engine.

Does the engine crank and start?

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Go to Step 3

Go to Step 4

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?

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Go to Diagnostic System Check - Theft Deterrent

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1. Replace the BCM. Refer to Body Control Module Replacement in Body Control System.
2. After BCM replacement, perform the Setup New BCM procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Is the repair complete?

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Go to Step 5

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1. Turn the ignition switch off.
2. Reinstall connectors/components removed.
3. Check for BCM current DTCs.

Are there any BCM current DTCs present?

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Go to Diagnostic System Check - Theft Deterrent

System OK