Universal Theft Deterrent System

WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The Universal Theft Deterrent (UTD) anti-theft system is designed to deter vehicle theft by pulsing horns and/or exterior lights when unauthorized vehicle entry is detected. The UTD system is an internal function of Body Control Module (BCM), utilizing PASS-Key(R), serial data and various switch inputs. The Powertrain Control Module (PCM) controls fuel enable circuit. BCM must exchange a unique password with PCM to allow fuel enable. If BCM detects an illegal intrusion, BCM will disable cranking and PCM will not enable fuel delivery. The UTD system interacts with Remote Function Actuation (RFA). For more information on remote transmitter and RFA system, see REMOTE KEYLESS ENTRY SYSTEMS - CORVETTE article.

System components include door ajar switches, hatch ajar switch, door lock cylinder switches, power lock switches, hood ajar switch (export only), key in ignition switch, BCM and relays.