Question about 1995 Cadillac DeVille

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1993 cadillac deville security light fashing will not start tryed new key no luck

How do i fix this , dealer sold me new key only had one for car with new key it still flash an will not let car start tryed unlocking everything relock up, leaveing key on for 20 min. cant get to reset

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  • Anonymous Jan 15, 2009

    same problem

  • tsmith5746 Feb 10, 2009

    i fix this pro, by replaces a modler chip under dash 3 doller at rs for bag of them use tester to get the one that tested close to the one in there car working fine know

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Each key must bee programmed to the anti theft defice for the car to operate properly dealer must do this

Posted on Nov 18, 2008

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Try disconnecting the negative battery cable for 15 min hook back up and see if it will start.it worked for me the first time but i am having the same problem with it right now and its not working and i cannot figure out what it is that i need to do.

Posted on Jan 04, 2009

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1 Answer

Theft security problem


Usually it means the computer is not accepting the chip in your key.
It can be the key, the sensor in the lock cylinder, or something in the security module or computer.
You might try another key or lock and unlock the driver's door with the key.

Jul 27, 2013 | 1998 Cadillac DeVille

2 Answers

I have a 1992 cadillac deville coupe. it as gas, new battery, good starter, and i checked all fuses under hood and inside the car but the car wont start unless i get a screwdriver and hit the two bolts...


i dont have a whole lot of expierience with those. i do know that there is a security sensor in the key. when the key wears down it wont even crank. you have to get new ones from a dealer

Jun 13, 2011 | 1992 Cadillac DeVille

1 Answer

Lost both sets of keys on 93 model deville has a chip on key to start engine


you will have to go to the dealer for this fix. They may be able to cut you a key from the VIN number. If not then a new ignition lock and key, then it will have to be programmed to the computer.

Nov 27, 2010 | 1993 Cadillac DeVille

1 Answer

94 cadillac deville.. car will not start because security light is blinking...already tried a new key and the 30 minute relearn procedure with no luck....is there a way to bypass this ? and how? im...


Try setting the alarm ,and make sure the hood doors and trunk are closed,after setting the antitheft,leave it for 1 minute and disarm it,then see if it will start,if it is not the antitheft,and it is in the key fob,the cylinder you are talking about maybe the problem.

May 19, 2010 | 1994 Cadillac DeVille

1 Answer

My 2000 cadillac deville will only start sometimes, the mechanic has replaced censors, starters, etc. now he thinks its the key or the security system, i went and got a new key but it sill wont start, what...


if it truly is a key issue and you got a new key you still need the key programmed with the computer

sounds to me like you need a new tech

you should find the right answer the FIRST time at your caddy dealer!!!

Jan 19, 2010 | 2000 Cadillac DeVille

1 Answer

Replaced battery now car will not start, service security system message on dashboard info. please help


The car is not reading the key and thinks someone is trying to steal it. Try another key or see a dealer.

May 08, 2009 | 2002 Cadillac Deville

1 Answer

Security lights flashing.. on 1993 cadillac


try to take the door key and lock and unlock both doors and try that.

Mar 30, 2009 | 1993 Cadillac DeVille

1 Answer

Turn off security light on my 1992 cadillac deville


I had that same problem and it took me forever to figure out what was wrong. You are probably using an aftermarket key as was I. The stupid little plastic/metal chip in the shaft of the key is for the security system. Sometimes if you insert the key and turn too fast it sets off the security system. To solve the problem go get another key made from a different key maker, they cost around $15-20. Or, insert the key slowly and turn the ignition slowly. Or go get a good key from the dealer, I've heard it may be ~$50 for this key but it should work the best. FYI I still just use my aftermarket key and just deal with the occasional no start wait 3 min ordeal. Good luck.

Jan 21, 2009 | 1992 Cadillac DeVille

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