Question about 1999 Cadillac DeVille

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How can I reset the.security system on my 1999 cadillac deville d eligance

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

jwyatt816
  • 3 Answers

SOURCE: 2001 Cadillac Deville Security System

Check engine to chassis ground I had same prob

Posted on Oct 03, 2008

  • 3 Answers

SOURCE: 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.

Posted on Feb 10, 2009

  • 4 Answers

SOURCE: 1999 cadillac deville air wont work

There's a blower motor (fan) under the hood and up against the firewall near the center of the car that takes some work to remove. It has gone out in the last 2 of my 4 Cadillacs. Turns out if you're not real careful with the positioning of the spark plug wires they will brush up against it, and if one of them gets cracked or brittle it will "arc" and short out the blower motor. The a/c compressor should still come on (you'll hear a click when it engages) but you won't get any air blowing into the cabin, hot or cold.

The part was like $200 stock (year 2000 prices) and it took about an hour to remove it. My Caddy at that time had this damn strut bar going across the engine bay which we eventually removed to get to the blower motor.

Posted on Apr 09, 2009

  • 97 Answers

SOURCE: 2001 cadillac deville, overheats without loss of coolant

First, provided their are no visible coolant leaks and/or loss of coolant with no signs of leaks, I would thoroughly flush cooling system and replace coolant, then check and/or replace thermostat (you can place thermostat in boiling water to check for proper function), if you have tried these 2 steps and still are experiencing overheating you may need to replace your water pump which can be a tricky job if you're unfamiliar and try to do it yourself, however, I could walk you through it if necessary. Also visually check your radiator hoses for bulges, wear ,etc along with heater hoses etc. You may want to also check radiator fins to see if they are dirty/obstructed and clean if necessary. Let me know if I can assist you further and how it works out

Posted on Aug 30, 2009

emissionwiz
  • 74945 Answers

SOURCE: security system for automobile

u can't just clip the wire however you can install a resistor that equals the value of the key into the anti-theft module to bypass it.

Posted on Oct 05, 2009

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1 Answer

99 deville that wont start because security light on and car wont start now


Is possible that ypu need to reset the security system, I suggest check on the 1999 Cadillac Deville Owners Manual this procedure.

Hope helps.

Apr 09, 2013 | Cadillac DeVille Cars & Trucks

1 Answer

Where is my auto shut down relay switch on a 99 cadillac deville


No, this is not a SHUT DOWN RELAY.. The Emergency Fuel Shut off is one on... It is ON until you reset.

you are having a Heating system Electrical and you are getting Feedback into your System and it will continue until you address the root of the problem.

You need to find a GOOD Automotive Electrician

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Try taking the hot cable of the batter, let the computer reset, wait 5m, then put it back on tighten it up.

Apr 04, 2013 | 1999 Cadillac DeVille

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How to reset security system on 2001 cadillac deville


That's a "dealer only" solution...have fun!

Jan 01, 2013 | 2001 Cadillac DeVille

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You could have a faulty alternator. There is no reset procedure. What is your voltage reading?

Jan 29, 2012 | 1999 Cadillac DeVille

1 Answer

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try this trun key on for 10 to 20 min.s do not try and start it just trun it on. after waiting then trun key off and try to start. this should reset your system.

Sep 13, 2010 | 1999 Cadillac DeVille

1 Answer

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1996 on up OBD II systems require a scanner with the 'clear code' feature to reset the SES light.

Otherwise, one can cycle starting and stopping the engine 30 or 40 times to clear the SES light. This is not recommended, though, as it takes a long time.

Jun 03, 2010 | 1999 Cadillac DeVille

2 Answers

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The security system (VATS/PassKey) is having problems, it's typical on those cars. You can find a great write-up here: http://newrockies.ca , it was the only thing that saved my Park Avenue.

Jul 23, 2009 | 1995 Cadillac DeVille

1 Answer

1999 Cadillac Coup DeVille


Have your a/c system charged and tested for leaks.

Jun 21, 2009 | 1999 Cadillac DeVille

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More likely it is the spark plugs and the engine is mis-firing... take them out and check them

Jan 24, 2009 | 1999 Cadillac DeVille

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