Question about 2004 Oldsmobile Alero

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Security System on 2002 Oldsmobile Alero

The Security System keeps shutting down the cars ignition system. What would cause that I;ve been doing this also. I just bought an2004 Alero last week and the guy from the dealership said this might happen every now and then. Well to my surprise.. it happened to me today. I turned it on and my car didn't start so I left the key in for four minutes like I was told to do.. but I ended waiting for 10 minutes instead. But it started right away. I waited for the security light to stop flashing and turned the key back and turned the car on and it started. I just wanted to share this info with someone. It does work, but I don't know for how long..it's kind of annoying to sit there waiting..

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  • goodinhouse Mar 12, 2009

    2004 alero... runs gr eat.. one day wouldnt start.. security light on.. DOES NOT blink.. stays on.. i tried the 10 min. thing .. NOTHING. .tries to start but wont? HELP

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The most common cause of this is the key, to check this use another working key, if the problem persists the ignition lock cylinder sensor is defective and the lock cylinder must be replaced, the dealer will need to do this as the security system must be re-programed to accept the new key code.

Posted on Feb 09, 2009

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SOURCE: Diagnostic code p0442

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http://www.obd-codes.com/p0442

Posted on Jan 03, 2009

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Posted on Jan 02, 2017

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02 olds alero no start system shut down


Where did you try to by-pass at , with the 2000 ohm resistor ? Is the SECURITY light lit on the instrument cluster ? Probably has another problem other then the key . The anti-theft system in your vehicle can not be by-passed by using a resistor .

The Passlock™ System is provided in order to prevent vehicle theft if the ignition lock cylinder is forced to rotate or the ignition switch is operated while separated from the ignition lock cylinder case. If starting is attempted without authorization from the Passlock™ System, the powertrain control module (PCM) will disable engine starting. Start disable may be in the form of fuel disable or starter disable, depending on engine application.

Your best bet , take it to a qualified repair shop . Before you render it unfixable . (cost to much )

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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.
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As for the lights being on many GM products do that right after the key is off but if you open the driver's door they should go off. Not sure if that model is part of the ignition switch recall or not. Due to numerous ignition switch problems I would have the ignition switch replaced. The key cylinder IS NOT the switch. The key lock cylinder operates a rod that in turn moved the ignition switch to various positions. Battery must be disconnected and care taken not to deploy the airbag while the switch is replaced. I think I would go with a after market brand such as Delphi rather than another AC Delco factory switch.

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1 Answer

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The security light 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.
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1 Answer

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The security system may be your problem. Look for a light on the dash that says SECURITY or ANTITHEFT when the vehicle won't start. This light 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. It will normally allow the vehicle to run for 1-5 secomds and then shut off the fuel injectors. This link explains it pretty well.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

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1 Answer

Security System on 2002 Oldsmobile Alero


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