Question about 2003 Chevrolet Malibu

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Antitheft system malfunction - 2003 Chevrolet Malibu

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If this is the same as a 98 then this should work, you need to cut yellow wire going to passlock resistor at the ignition cylinder, while its running. the security light will stay on. but not starting will go away.

Posted on Jun 04, 2010

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Dealer only or it wouldnt be an anti theft system

Posted on Jun 04, 2010

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1 Answer

I believe the security system malfunction


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/
http://newrockies.com/

Jan 26, 2015 | 2002 Chevrolet Malibu

1 Answer

Vats malfunction


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://vatspasslockpasskeysecurityhelp.yolasite.com/

Dec 13, 2013 | 2002 Chevrolet Camaro

1 Answer

Security system malfunction


The security, antitheft, or passlock 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 misinterperates 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 may help you find ways to bypass this or fix it yourself.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Apr 25, 2013 | 1997 Chevrolet K1500

1 Answer

No spark


A "no-spark" condition can be caused by anything from a bad ignition coil, to a failed crankshaft position sensor, or a defective Powertrain Control Module, or even an antitheft system malfunction. I highly recommend that you BEGIN diagnosis of your computer-controlled ignition system by performing a full scan of your onboard computer network.

Apr 30, 2012 | 2004 Nissan 350Z

1 Answer

My car wont start not the battery


These cars have a standard antitheft system. When this malfunctions, it will cause the vehicle to not start. Might look into that.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Apr 26, 2012 | 1998 Oldsmobile Intrigue

1 Answer

I BOUGHT A GMC JIMMY THAT'S MY PROBLEM! JUNK!


A malfunctioning antitheft system can turn off injectors causing just such a problem. Look for a light on the dash that says SECURITY or ANTITHEFT. If this light is present, go to this link for help.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Dec 20, 2011 | 2001 GMC Jimmy

1 Answer

1990 pontiac firebird sometimes fails to start, battery good & fully charged


Just a shot in the dark, but GM has had years of problems with the antitheft systems malfunctioning and causing intermitant starts. Check out this link

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Sep 18, 2011 | 1990 Pontiac Firebird

1 Answer

I have a 1998 xlt ford explorer and i heard u can disable the theft sensor by grounding wires in the door panel but i cant figure it out ive been putting alota cashinto it for nothing


Why are you wanting to disable the Antitheft System??? I figure it can only be 1 of 2 things...your Antitheft System is malfunctioning and you don't want to do what it takes to repair it properly, or you are trying to steal a truck. In either case, I don't think I can help you.

Jan 25, 2011 | Ford Explorer Sport Cars & Trucks

1 Answer

Everytime I try to crank it she won't turn over, it's not the battery it's brand new. Also when driving it won't go over 35mph.


Your catylitic converter may be blocking up. Also if you haven't changed the fuel filter, do so. The antitheft system may be malfunctioning. There is a sequence to follow to reprogram the anti theft system. Ask at any GM dealer for the fix. Good luck!

Aug 26, 2010 | 2002 Chevrolet Impala

3 Answers

Security problem


I can't really send you the information on how to bypass the antitheft system. It would be defeating the purpose of the antitheft for everyone else that has it in thier car. But. You have a couple of choices. Bring the car to a dealer and have them fix it properly or, bring it to a car audio/electronics place that installs remote car starters and have them bypass the antitheft (probably cheaper option).
On your key there should be a black square with a silver piece in the center. That's the antitheft part. Check to see if its clean and not worn down. Or the contacts inside the key cylinder (ignition) could be worn down, if so, it needs to be replaced. When starting wiggle the key abit, it may take a few tries because of the 'timing' of when the antitheft system actually 'checks' the key.
You can get a new key made by a place that knows about the chip in the key, it's not exactly new technology so most places that can make keys should know about it. I suppose you could also hit the steering wheel repeatidly at the same time that your turning the key while your trying to start the vehicle. But you probably did that by now in frustration.
If there's no black square with silver piece in the key then there's some type of aftermarket antitheft system that's malfunctioning.

Sep 26, 2008 | 1999 Pontiac Grand Am GT

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