Weboct 17, 2009 · this condition may be due to the vehicle security status signal inputs to the vtd module being corrupted and setting false dtcs (b1009, b2734 and b2947) and. Weboct 15, 2020 · if the alarm system is acting up in your cadillac deville then the first thing that you should do is try to reset the system. Usually a simple reset is able to clear up. Webfeb 3, 2020 · does it crank? If not, and the security li light is on, vat system is triggered. The dash went crazy, check fuses, relays, ground points. You'll need help and tools for. Asked by don may 06, 2016 at 01:04 am about the 2002 cadillac deville sedan fwd. My service theft system.