Question about 1998 Chevrolet Cavalier

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Relearn procedure wont work

I put in a new key cylinder and the relearn procedure is not working. it said the theft light should be blinking but it won't. it flashes a few times then stays solid.

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I'm not sure if this will work, but try this: disconnect the negative cable from the battery for several seconds (30). Turn the key to the 'on position' and reconnect the battery. Then see if you can reset the system.

Posted on Mar 28, 2014

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Posted on Jan 02, 2017

james klgr
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SOURCE: anti theft 1997 malibu

most are 4 ohm can be checked by putting a resistor in the wire and if the car starts thats the right resistance if 4 ohm dont try a variety os sizes until it does

Posted on Jul 03, 2008

  • 1244 Answers

SOURCE: 2003 GMC Yukon with new lock cylinder. Passlock won't relearn

un hook the battery cables then try to reset it if that dont work then you will need to take it to a shop to have the passlock code reset

Posted on Jan 22, 2010

  • 743 Answers

SOURCE: theft light on will not

It would really help to know exactly what you're working on.

Posted on Sep 13, 2011

  • 200 Answers

SOURCE: 01 blazer security light on theft deterant code given truck will try to start then die. please help before i have to put another penny in it. Is it the passlock, bcm or what. there is no chip in my ke

check with code scanner to see if it is passlocked can barrow with deposit from auto zone the passlock will only turn off fuel with starting fluid it should run for a few sec.

Posted on Sep 19, 2012

Testimonial: "it is passlocked just need to fix it"

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How you turn off a factory security went it on it wont start


The security, 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://www.diy-gm-security.com/

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How to remove kill switch


If the vehicle is equipped with a factory security system and the security light is blinking, the theft deterrent will not allow the vehicle to start. Have you tried another key? You can relearn the theft system. Make sure the battery has a good charge. Turn key on until all dash lights come on ( do not try and start ) and leave key in on position for 15minutes. Turn off key and wait 5 seconds. Try and start vehicle. Some times this procedure will need to be done 2 times in order for the relearn to be succesful.

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How to reset the anti theft on a '99 Lincoln Town Car?


Anti theft system can't be reset without a factory level scan too that will do PATS programming. Best thing to do is to try a different key if you have one. If you have only the one key you may need to get a new key and lock cylinder (should come with two keys). You must have two keys to do a PATS relearn.

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Why is security light on after i replaced old battery with new one wont start now ?


You lost power to the security module and it now needs a "relearn" performed. Make sure the battery stays connected for this relearn.

Turn the ignition to the "on" position and verify that the theft light is on or blinking. Then leave the key on for at least 30 minutes without disturbing the vehicle. After 30 minutes come back to vehicle and observe the theft light. Should be on steady or off. Do not turn the key off, move it from "run" to "start" and attempt to start vehicle. Engine should start and run if system was successfully relearned.

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Theft light is flashing, won't start. can I reset myself.


Try this theft relearn procedure....
Chevy Malibu Theft Relearn Procedure
If it does not work, you may need a new ignition key cylinder.

Sep 28, 2013 | 2001 Chevrolet Malibu

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2003 f150 turns over but wont crank, also theft light blinking fast


Usually means the sensor in the lock cylinder is not reading the code in the key.
If the pass key system does not get the right signal from the key the truck will not start.
You might try taking the key off your ring - put it in the lock and turn the switch on - but don't crank it for at least a minute.
There are procedures to reset the anti-theft online - - if you do a search for resetting anti-theft F150 you can read them.

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remove your radio, there will be 2 bolts to undo, switch will slide into dash, unplug harness turn key to remove cable, if ignition wont turn you may have to take ignition apart to remove cable. reinstall in reverse procedure. will need to relearn new key to be able to start. try to start, leave key in run position, theft/security light will be blinking. leave on for 15 min or light stops blinking, turn off turn back to run without trying to start. leave on for another 15 min. turn off then start

Jun 13, 2012 | 2002 Oldsmobile Alero

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REPLACED KEY CYLINDER AND HOUSING. DID RELEARN STEPS AND CAR STILL WONT START. SECURITY LIGHT SOLID DOSENT BLINK. WHEN CAR IN RUN POSTITION NO SECURITY LIGHT ON. CAR STARTS BUT FUEL SHUTS OFF IN SECONDS. I...


Rule of thumb, when the security light flashes, thee problem will be in the key or ignition. When its solid, its probably the theft deterrent module. TDM. This link might help you understand the problem. http://vatspasslockpasskeysecurityhelp.yolasite.com/

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How do you reset anti theft on a 2007 equinox


TURN ON IGNITION SWITCH TO ON POSITION.ENGINE OFF.REPEATEDLY PRESS VECHICLE INFORMATION BUTTON UNTIL PRESS TO RELEARN REMOTE KEY IS DISPLAYED.PRESS SET RESET BUTTON UNTIL REMOTE KEY LEARNING ACTIVE IS DISPLAYED. IF THAT PROCEDURE DONT WORK.INSERT MASTER KEY INTO IGNITION SWITCH.NOW SWITCH IGNITION ON SWITCH IGNITION OFF.REMOVE MASTER KEY.WITHIN 10 SECONDS INSERT NEW KEY.SWITCH IGNITION ON.ENSURE SYSTEM WARNING LAMP SWITCHES OFF.NEW KEY NOW PROGRAMMED.IF YOU STILL HAVING PROBLEM RESETING THEFT SECURITY SYSTEM THE DEALERSHIP HAS TO FIX.REPROGRAM IT.

Mar 14, 2011 | 2007 Chevrolet Equinox LS New Cars

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