Question about Cadillac CTS

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My 2005 cts security system says it needs service. If you turn the key to try and start it it does nothing.also it will not let you remove the key.

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  • ken hoffman Oct 15, 2010

    we went out of town and when we returned the car was like it is now. It was fine before we left. Is it possible that someone tried to steal it and locked up the security system.



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Repair of this electronic system requires the hook up of a GM special electronic system scanner, until this is done there is no way to know what is causing the problem, u can't guess, only careful testing by the dealer will end in a satisfactory and timely repair.

Posted on Oct 15, 2010

  • yadayada
    yadayada Oct 15, 2010


  • yadayada
    yadayada Oct 15, 2010

    One of two things will set a no failure ( no failed components the system is fully functional) lock out, one attempted starting without a coded key (attempted theft) the other is a low battery state of charge, have the battery tested to eliminate it as the cause, Kragen Auto, Autozone and others will test the battery fro free, this is VERY important, have the batt tested please, if it checks ok then the security system has a fault and the next step is a trip to the GM dealer service dept., the tools needed to scan the systems electronics is not something u can do at home, have done this kind of work 35 years and know what i am advising is correct.



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Welcome to

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Thank you for using

Regards, Lee Davidian

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