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Won't start due to anti theft sys - 1990 Cadillac SeVille

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You need to have it reprogramed at dealership check key and see if thats the problem take the car and key to dealear ship

Posted on Aug 24, 2010

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Posted on Jan 02, 2017

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Jan 13, 2016 | 2005 Chevrolet Malibu Maxx

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2003 Saturn Vue with a identity anti theft system. Replaced my battery a few months ago. Couple weeks ago noticed a little difficulty starting up. Last week wouldn't start just clicking noise. Jumped...


Anti-theft system has nothing to do with it . Battery cables , maybe , Park neutral safety switch possibly ! With anti-theft system problem you wouldn't a click or anything , that is if the anti-theft disables fuel or the starter . Plus the SECURITY light would be on if it were a anti-theft system problem . Your best bet , take it to a qualified repair shop that knows how to do starter circuit testing >
Starter Voltage Drop
How to voltage drop test starter motor circuit

And what's this identity anti theft system ? No such thing ! The vehicle has a content theft an vehicle theft deterrent system !
This system disables fuel not cranking of the engine. The VCM/PCM will not disable the fuel due to any BCM message for the remainder of the ignition cycle.
If the VCM/PCM does not receive the same password from the BCM as the last learned one, the vehicle will start and then stalls due to the Fuel Lockout.

May 17, 2017 | Cars & Trucks

1 Answer

Car won't start due to anti theft device


Do you have a combination code for the driver door keypad? If so, try inputting that as you would to unlock the car.

Dec 11, 2012 | 1997 Lincoln Town Car

1 Answer

Truck just won't start. Light and everything else has power. Won't crank at all. Anti Theft system was not set and hasn't been used in almost a year. Had this problem a year ago but it


What year?? What I have run into is the Anti Theft cable shorts out causing the intermittent starting issue. I would try removing the cable

Oct 01, 2012 | Cars & Trucks

1 Answer

Anti-theft won't let me start my car


this is a fused circuit a very low amp fuse their are several procedures to reset the theft cont. check with your dealer depends on the car

Jul 30, 2012 | 2008 Cadillac STS

1 Answer

Replaced the fuel pump. the car starts, but won't stay running


The anti-theft system will keep the car from being driven, so I would start there. You may need to reset the anti-theft or check the ignition key for problems.

Jun 22, 2012 | 2001 Nissan Maxima

1 Answer

06 trailblazer trouble with anti theft system, I think, starts right up then other times the anti theft light comes on and it won't start. can try it 2-4 hours later and it starts right up????


The first thing to do get it checked for DTC'S - diagnostic trouble codes . Not at auto zone or any other parts store , you want to have full scan of all the modules on the car. Don't know how much you know about automotive electronics , computer controlled systems etc.... Your vehicle has at least 10 modules (computers ) on board , there all talk to each other on a serial data network . C.A.N - controller area network . Or in the case of GM it has it's own . GMLAN -
How to Diagnose Controller Area Network CAN When you turn that ignition switch to start it is an input to the computer ,be it the PCM or BCM ..

Jul 01, 2017 | 2004 Chevrolet TrailBlazer

1 Answer

Will not start ,maybe due to anti theft system


sorry dealer only ,unless you can get the right software

Jul 15, 2010 | 2000 Saturn SL

1 Answer

Starter won't turn over, could it be due to anti-theft or theft deterent system? What can i do


If the anti-theft light is flashing then it is in theft mode. If this is the case turn the key on and wait 1 hour then cycle the key to see if it starts if it does you have a anti-theft problem see dealer. sorry.

Aug 02, 2009 | Chevrolet Monte Carlo Cars & Trucks

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