Question about Cadillac DeVille

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My Deville wont start after getting new battery the service theft system light com3s on

The car did start before the battery was replace

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I have a 2001 Cadillac deville that will not start when I turn the key it clicks for a few seconds and nothing. The service anti thift soon came on, on the dash the day before the radio stopped working...


It's hard to say for sure since it sounds like it could be many things. If you turn the key and you hear a few clicks coming from the engine and then nothing, it could mean a very very weak battery. Your first step should be trying a different (fully charged) battery. Good luck.

May 30, 2014 | 2001 Cadillac DeVille

1 Answer

I have a Cadillac deville 1998 v8 northstar. I had my alternator rebuilt and got a new battery. Vehicle started once but dash read battery not charging. Took vehicle to O'Riellys Battery tested bad. H


When you replaced battery you activated the system. Need to read owner manual and see if it tells how to deactivate it. You may need to contact dealer to deactivate it.

Jun 04, 2017 | Cars & Trucks

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

1 Answer

My 2002 cadillac sedan deville wont start after sitting all night, it runs all day then nothing in the moring i replaced the battery and still the same problem


There is tech service bulletin on this.There is a update program for the Body Control Module at the dealer.Less than $100.

Oct 15, 2012 | 2002 Cadillac Deville

1 Answer

Dash says service anti theft system and wont start


Disconnect the batttery for 10 minutes, connect the battery and attempt to start, it will not start: do not turn the key off but leave in the on position, let the computer reprogram itself, the antitheft light will flash for 10 - 15 minutes, when it goes out; start you car, you are finished

Sep 06, 2012 | 2001 Cadillac DeVille

1 Answer

Car indicate wont start wait 3minutes theft system problam what is the problem?


the resistenance reading from the resistor in the key is not. getting to the theft system. to repair you need to replace the ignition lock cylinder and a new key.

Aug 30, 2010 | 1999 Cadillac DeVille

2 Answers

Car will not start anti theft system acting up wont let starter


Cadillac dealer can by pass that anti theft module

Dec 09, 2009 | 1991 Cadillac Eldorado

1 Answer

94 deville wont turn over, i think my alarm is in theft mode


Have the ignition fuses replaced and have the shop that installed the remote start fix the main power sorce for their unit.

Jun 14, 2009 | 1994 Cadillac DeVille

1 Answer

Car wont start


as long as security theft system is on, car wont start.

don't you have the remote key to disable the theft system?

you can bypass security but you have to have wiring experience and splicing before you can proceed.

tnx 4 using fixya,

drcool

Oct 14, 2008 | 2000 Cadillac DeVille

4 Answers

Theft system armed


disconnect your battery wait 30 seconds then reconnect and it wll start for sure. if not get a new or clean your old key and make sure it is dry then try again. I have dealt with this a hundred times an think it has to do with worn chips on the keys/bad sensor in the ignition.

Oct 08, 2008 | 1995 Cadillac DeVille

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