Question about 1999 Cadillac DeVille

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My 99 deville has a problem with the security. It says on the dash "security problem car may not restart" and the radio, the A/C, and the dash all stop working. But after a while its goes back to normal and they all start workin agian. It does this the whole time im driving the car.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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JustJeeps
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SOURCE: 1995 deville dashboard freak out

try disconnecting battery terminals for 15 min and reset computer

Posted on Nov 18, 2008

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  • 1 Answer

SOURCE: 2001 Cadillac Deville problems starting

I have had the same problem and I have come to the conclusion it is the security system. After 3 minutes the car will start so there is nothing wrong with the battery or starter. I have had it to the dealer a few times and they cannot solve it. It may be the locks on the doors and they may not be resetting properly. I have learned to live with it.

Posted on Oct 14, 2009

  • 1 Answer

SOURCE: 1997 cadillac deville delagance - anti theft device

I've got a 97 deville d'elegance that has issues similar to these. Last year the red anti-theft light came on and the car wouldn't start-took it to the dealership and they replaced the PCM? (the main brain for the system) for $900...the guy told us the wiring was so corroded he didn't want to mess with it much. Today the message started flashing on the dash that says "anti-theft problem/ car may not restart" but it still turned over in the driveway a couple times so I am hoping I can reset it. The wiring system is jacked and will probably need to replace the wiring harness completely. Doubt its worth it. Not a secure feeling with 2 babies in the back seat in the middle of winter....

Posted on Feb 18, 2010

  • 1 Answer

SOURCE: security system problem car may not restart

Had the same problem, a service guy at the dealer soldered a fuse between the ignition wires. Never had a problem again. The problem is the keys, they have a resistor on the key, if the ignition doesnt detect the right resistance it will not unlock the security system. The fuse allows the system to always read resistance in the ignition system. Seriously I could not make something that silly up, but the fuse worked. 5 years not a problem

Posted on Apr 10, 2010

  • 1 Answer

SOURCE: im haveing a problem starting

put key in drivers door that will disable it

Posted on Oct 30, 2010

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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

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did you check for vacuum leaks in any of the lines or intake gaskets?

Oct 04, 2012 | 2002 Cadillac Deville

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1988 Cadillac DeVille


The 88 Deville is one of many cars made by GM that is using the antitheft system called VATS PASSKEY. (its that little black chip in the key) When this system fails, the car can't get the signal from the chip, so it locks out the starter to prevent theft. The car thinks it's being hot wired, so it shuts down. Look for a light on the dash that says SECURITY or ANTITHEFT. This is proof of a security failure. This might be your problem. This link explains more.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Dec 31, 2011 | Cars & Trucks

1 Answer

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was the new alternator a re-manufactured one,(they have been known to be faulty)

Apr 08, 2011 | 1997 Cadillac DeVille

1 Answer

Remove dash board for radio on 99 cadillac deville


It is not a simple procedure that takes a good deal of time and tool use. The top pad has to come off, electrical connector rh side pull the vent grate from the middle, there are screws (7mm) that hold the woodgrain piece on all the way across and up through the glovebox through the two holes, have to remove lower trim under the column and under the glovebox all the screws are the same size keep track and dont lose them.

Jul 23, 2010 | 1999 Cadillac DeVille

2 Answers

Security system problem car may not restart


if you have an anti theft syestem you need to take it out or by pass it if its lojack good luck but if its an other kind i could help you out

Apr 02, 2010 | 1999 Cadillac DeVille

1 Answer

1997 cadillac deville delagance - anti theft device


I've got a 97 deville d'elegance that has issues similar to these. Last year the red anti-theft light came on and the car wouldn't start-took it to the dealership and they replaced the PCM? (the main brain for the system) for $900...the guy told us the wiring was so corroded he didn't want to mess with it much. Today the message started flashing on the dash that says "anti-theft problem/ car may not restart" but it still turned over in the driveway a couple times so I am hoping I can reset it. The wiring system is jacked and will probably need to replace the wiring harness completely. Doubt its worth it. Not a secure feeling with 2 babies in the back seat in the middle of winter....

Mar 30, 2009 | 2001 Cadillac DeVille

1 Answer

Trying to sell my 99 cadii


look it up on kelly bluebook, then get a quote to fix it, deduct the price

Oct 27, 2008 | 1999 Cadillac DeVille

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