GM Service Manual Online
For 1990-2009 cars only

The theft deterrent system on this vehicle is comprised of two separate systems, the vehicle theft deterrent (VTD) system and the content theft deterrent (CTD) system. The VTD system prevents drive away theft by keeping the vehicle from starting. The CTD system is the vehicle alarm system which discourages unauthorized entry into the vehicle. These systems are described and diagnosed separately within this section.

Theft System Indicators

SERVICE THEFT - VTD FAIL ENABLE

The drivers information center (DIC) displays the SERVICE THEFT - VTD FAIL ENABLE message when the VTD system detects a failure while the engine is running . The DIC receives a message from the BCM via the serial data circuit requesting the message to be displayed.

STARTING DISABLED DUE TO THEFT

The DIC displays the STARTING DISABLED DUE TO THEFT message when the VTD system has disabled the starting and fuel delivery system. The DIC receives a message from the BCM via the serial data circuit requesting the message to be displayed.

THEFT SYSTEM NOT PROGRAMMED

The DIC displays the THEFT SYSTEM NOT PROGRAMMED when the VTD system is in the learn mode.

Keyless Entry System (w/AU0)

The keyless entry system functions interact with the content theft deterrent system but is diagnosed as a stand-alone system. Refer to Keyless Entry System Description and Operation .

Radio with Theftlock

The theft deterrent system does not interact with radio theft lock equipped vehicles. Radio theft lock is diagnosed as a stand-alone system. Refer to Radio/Audio System Description and Operation .

CTD/VTD Description and Operation

    • For content theft Deterrent (CTD) information, refer to Content Theft Deterrent (CTD) Description and Operation .
    • For vehicle theft deterrent (VTD) information, refer to Vehicle Theft Deterrent (VTD) Description and Operation .