GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Theft Deterrent System Schematics

Connector End View Reference: Vehicle Access Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

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

Go to Step 3

3

Are only the headlamps inoperative?

Go to Low and High Beams Headlamps Inoperative

Go to Content Theft Deterrent (CTD) Alarm Mode Inoperative