1997 cadillac Deville"Theft System Problem/car may not restart" to bypass this I installed ignition/with new key still I get same message?

Try what Wyatt says ..put key in ignition . turn to on position for about 15 min. Turn ignition to off (not lock). then turn on and start. This will override the theft ignition system , and maybe allow the system to reset itself. let the car run for about 10 min

bcm has very little to with the anti theft. you need to de active the anit theft

The key resistor that you installed only bypasses the key and ignition aspects of the security system. The theft deterrent module is still active and is most likely your prpoblem. This link explains.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

The most common problem is the wires that come from the ignition lock cylinder to give the system the resistance value of the key are broke. To fix this you will need a new lock cylinder, a new key with the same resistance value of your old key. There is not any programming required.

Hi. You most likely have a ignition lock cylinder wiring problem. To repair you need to replace the ignition lock cylinder, a new key with the correct resistor. Hope this will help

you will need to replace the vats lock cylinder and key. the wires break at the ignition switch. the new cylinder will come with a dummy key . you will need to get a new vats key cut to that blank. take yor old key or vin# to the dealership so they wil know what your vats# is.

Read your manual or take it to the dealer. It sounds like it needs reset.....if this is a factory anti theft system, only the installer may be able to help you.

I had the same problem. trying to save money i took it to several auto places who thought they could fix it..... after a lot of money and my 800.00 after market alarm was taken off i had it took to the dealer . They fix it in two hours they put in new switch and key haven't had any problems sence.

as long as security theft system is on, car wont start.

don't you have the remote key to disable the theft system?

you can bypass security but you have to have wiring experience and splicing before you can proceed.

tnx 4 using fixya,

drcool

dear Hun~ It all has to do with the Vats system in your car. You can bypass it or get a new key or you might need a new ignition cylinder.