GM Service Manual Online
For 1990-2009 cars only

The content theft deterrent (CTD) system relies on the BCM in order to monitor the status of the vehicle access through doors or rear compartment. The CTD does not have any dedicated circuits or components.

The content theft deterrent system performs these functions:

    • Flashes the headlamps through the standard headlamps circuits
    • Sounds the horn through the standard horns circuits