Question about 2001 Cadillac Eldorado

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Theft deterent wont crank on my 2001 cadillac eldorado

Replaced steering column with used one but i need a wiring diagram of this complete system that wont let it start or crank

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The antitheft or lock picture/icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Mar 24, 2014

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Where is the theft deterrent module on my 2001 Cadillac deville


It is located in the steering column (the ignition key receiver is part of it). The obvious question is why you need to locate it - unfortunately, the theft deterrent system is dependent on a number of different modules and sensors, and just replacing or disconnecting it will probably disable your car without fixing whatever problem you are having. Back to a dealer ...

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That box is for the anti-theft system , he changed the lock cylinder . You need new PATS keys . PATS - passive anti theft system .The transceiver module communicates with the encoded ignition key. This module is located behind the steering column shroud and contains an antenna connected to a small electronics module. During each vehicle start sequence, the transceiver module reads the encoded ignition key identification code and sends the data to the instrument cluster.
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2003 cadillac deville, how do I deactivate anti theft system?


According to RepairPal: "the car wont start due to anti-theft system, it will say wait three minutes then start, but repeat this process 4-5 times - Visitor"

They say there are 75 reports of: "Problems with the anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The the key and ignition lock cylinder must be replaced to correct this condition."

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1 Answer

2001 cadillac theft deterent wont let engine run


The theft or lock icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Mar 18, 2014 | 2001 Cadillac Eldorado

1 Answer

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Excellent tutorial here that helped me when I had a loose steering wheel on my 1988 Deville.

This one is not from an 89 Eldorado, but all GM Tilt/telescoping steering columns from that time are virtually identical:

http://www.diyfiero.com/dropspot/Jazzman_Steering_Rack_Rebuild.pdf

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IF the theft lite is NOT flashing. Unplug and plug the crank sensor a few times and see if it starts. Replace the sensor and clean the terminals of the connector. If the theft lite IS flashing check the plug below the steering column for broken wires to the PATS antenna. Tilt wheels on some fords/lincolns stretch that wire and breaks at plug.

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Cant get my key in the ignition


try another key.make sure you using the right key.also check to make sure somebody didnt break key off leaving other half in switch.if all is good you have to go in steering column check the lock cylinder retaining screws make they are not loosen or missing.causing the switch not to be all the way in off position.if all is good replace switch.dealership has to replace switch.they have to reprogram new keys and new ignition switch to the PCM and BCM theft security system.are the car wont crank.

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you can reset the system by turning key to on position for 5-10 mins and then try starting it but its probably a short or grounding prob try the engine to chassis ground

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Starter disabled due to theft system


the wire that goes to the ignition to the anti theft device is probably broken if you call a good locksmith they can go in through the steering column and fix it same thing happened to my 95 eldorado apparently cadillac designed the anti theft system to coincide with the ignition and is connected to the ignition with two wires that turn as the key is turned the wires twist and eventually they wear out

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