Question about 1997 Cadillac DeVille

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'97 Cadllac Deville Concours reading "Anti Theft System Problem"

My 1997 Cadillac Deville Concours is reading "Anti Theft System problem - Car may not start" on the dashboard. I have replaced the starter and the battery. The car still will not start. How do I fix this problem? Help!

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  • yadayada
    yadayada May 11, 2010

    U take it to a dealer, they have the electronic scan tool to look at the problem and quickly find the solution.

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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.

Posted on Dec 31, 2010

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Make sure your key is clean try again, if not the system will tell you to wait 3 mins while key is in ignition this will reset the system and dash will tell you to start vehicle, you should be fine after that, common cause dirty key!!!!!!!!

Posted on Apr 20, 2009

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1 Answer

97 Deville still reads anti-theft problem on dash even after the key resistor is by-passed with resistors., will not turn over, fully charged battery. ?


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/

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