Question about 2003 Cadillac CTS

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How to reset 03 cadillac cts anti thief system?

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Posted on Jan 02, 2017

  • 405 Answers

SOURCE: 03 cadillac cts timing belt change procedure

if you know you can do this with directions and go to and buy a subscription, you will be glad you do, it is beyond the scope of this forum to tell you. But for 20.00 you will have exact precedures, step by step, and lots more on your car, It's worth it, I promise, If I have not helped you, please do not rate me, If I have please vote fixya. It's the only way you can pay be back for free. God Bless Good Luck, and Merry Christmas!

Posted on Dec 22, 2008

  • 5158 Answers

SOURCE: T/C light comes on in the dash of my 03 Cadillac CTS

T/C would be traction control i would think


Posted on Feb 01, 2009

  • 1392 Answers

SOURCE: 2004 cts cadillac service security system; key

Has nothing to do with security system. You either have a bad shifter assembly, or a faulty lock cylinder in your ignition switch.

Posted on Jun 10, 2009

  • 14 Answers

SOURCE: where is the thermostat on an 03 cadillac cts

no the thermostat is not always in the upper radiator hose

Posted on Jan 06, 2010

  • 1857 Answers

SOURCE: how do you bypass anti thief so my car will run.

there is no easy way. the problem is most likely the key tumbler failed and a code will indicate this. if it was easy to bypass the security it wouldnt be security.

Posted on Apr 30, 2010

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Mar 27, 2012 | Cadillac Cars & Trucks

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The anti theft isn't recognizing my key, and will not allow my 2003 CTS to start. What could possibly be wrong?

This comes from personal experience on my Mother's '03 Impala. Apparently the chip in the key died. Tried the spare key that came with the car and it all works again. If this solves your problem (as it did mine) just go to your dealership and have a new key cut.

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I do not mean to be hurtful and it will take some time to do. Maybe all day if you have no experience. If you need instructions just maybe you should have some do it for you.

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