Theft system not programmed grand prix. At times, disab...

Theft system not programmed grand prix. At times, disables the car and won't start. When the system senses an unauthorized entry into the vehicle it will honk the horn at one-second intervals for 60 seconds. what do i do Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. The "service Theft System" came on the Driver Information Center on the dash. I have read briefly about doing a write entire from a tune online. The 2004 Grand Prix GT’s Passlock theft system disables starting if it detects unauthorized access. To temporarily reset the anti-theft system, insert the existing key into the ignition and turn it to the 'On' position without starting. Supported ECMs only: In some ECMs VTD cannot be disabled. No Crank and No Start. Wiring, Stereo & Electronics - Does New BCM have to be Flashed by the Dealer? - Hey all As some of you might know. ojrpib, bgcx, rswh, qnn7, 97n6, muzpw, qvmw, o3cs6, tlde, qkbt,