GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Theft Deterrent System Schematics

Connector End View Reference: Theft Deterrent System Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Perform one of the following to activate the content theft deterrent (CTD) alarm mode:

    • Operate the PANIC button on the keyless entry transmitter.
    • Complete the following steps:
        1. Open the driver window.
        2. Lock the vehicle using the power door lock switch.
        3. Close all of the doors and wait at least 30 seconds.
        4. Reach in and unlock the driver door manually.
        5. Open the driver door.

Do all of the alarm mode functions activate lamp flash and horn pulse?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Are only the headlamps inoperative?

Go to Low and High Beams Headlamps Inoperative in Lighting Systems

Go to Content Theft Deterrent (CTD) Alarm Mode Inoperative