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Why does GM security system lock cars? - Cars & Trucks

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  • Cars & Trucks Master
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Factory Auto manuals
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search for : factory service auto repair manuals

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Posted on Jan 25, 2016

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Posted on Jan 02, 2017

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gpgab97
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SOURCE: gm passlock security system how to disable

Wiring diagrams can be found online, however i believe you can re-learn the key by leaving it inside the ignition tumblen and switch it to accesory. Then disconnect the b attery for about ten minutes and then try starting the car without taking the key out.

Posted on May 03, 2009

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How to reset my security on my 1997 pontiac grand prix


Unfortunately there is no resetting. You need to either replace your ignition lock cylinder and have the new ones tumbler pins changed to your original key. Or have your VATSS system bypassed. A stereo shop that installs remote start systems will be able to help you with the bypass.

May 13, 2016 | Pontiac Cars & Trucks

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How to disable the security anti theft system in a 2002 pontiac grand am


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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Jun 09, 2015 | 2002 Pontiac Grand Am

1 Answer

Having issues with the 3 minute lock out


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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May 17, 2015 | 1989 Cadillac Seville

1 Answer

Dash light saying theft something,cant think of second word,but now car wont start


GM Passkey Security Systems: What You NEED To Know. Written by NEWROCKIES Inc., February 7, 2014, GM Passkey, GM VATS
Back in 1986 the GM Passkey security systems, also known as immobilizers, were introduced. In doing so, an expensive was implanted in each and every one of the affected vehicles. Given the impact of the GM Passkey systems in the years since they were introduced, it's not really clear whether the intention was really to provide additional security, or to generate a new revenue stream.

GM PASSKey goes by many names

Over the years, GM has come up with a number of catchy names for these systems:
  • Vehicle Anti-Theft System (VATS)
  • Personal Anti-theft Security System (PASSkey). To be precise, GM PASSkey I, PASSkey II, and - count them - PASSkey III.
  • PASSlock. After all, what good is a key without a lock?

The disabling effect of GM PASSkey Systems

In spite of the efforts to make the systems, generally known in the industry as PASSkey Systems, sound effective and ever more advanced, they are really all pretty much the same.
It doesn't really matter if the vehicle's PASSkey System is controlled by a resistor in the key, by the Theft Deterrent Module (TDM), or by the Body Control Module (BDM).
One of the key attributes that all the GM PASSkey Security Systems share is that they systematically end up immobilizing cars, alright, making it impossible for their owners to start them!
Yes, the many versions may all look different, but they are all based on the same simple idea - so simple, in fact, that you could argue it's not a suitable foundation for building a true security system.
Most importantly, they all end up immobilizing the host vehicle permanently and often before it is even 7 years old. In all cases, your friendly dealer will ask at least $1,000 to fix the problem - which will invariably strike again after some more time.
But wait a minute... what's a car dealership's core business? It's not repairing obscure, crippling vehicle problems, at a reasonable price. It's selling you a new vehicle, as often as humanly possible.
So even if your dealership were inclined to help you repair or replace the GM PASSkey Security System... well, what a coincidence, many of all those versions introduced over the years have been completely discontinued.
In the meantime, your car still won't start, and that won't change unless you have a way to disable or bypass the GM PASSkey System, and so far... you don't. Nor do you have time to figure it out. And your time is money. Money on top of the taxpayer-funded bailout of GM in both the USA and Canada.
So what do you do end up doing? Maybe you junk the lame Chevy. Then you take out yet another loan to buy another one. That's a perfectly happy ending to this story.... for the dealer, for GM, and for the bank.

Don't get me wrong! What I hate is Passkey, not GM!

Look, don't get me wrong. I love GM cars. Most of all, I love Buicks! I love the sound of the engine, the understated attitude, the size.... In fact, I love them so much, that I own two of them! You can even read about
how I saved my '95 Buick LeSabre from the PASSkey trap. And I was recently lucky enough to get my hands on a rich gold 1970 Buick Electra in mint condition, no GM PASSkey Security System in that one, thank you very much!

An ounce of prevention....

Is worth a ton of cure. You remember that saying.
Remove the GM PASSkey "Security" System before it gets a chance to take out your vehicle. Seriously! Even (or especially) if it's still starting every time, just do a full bypass of the PASSkey System with the NEWROCKIES Inc PRO Module and save yourself a great deal of money, time, and aggravation.
And if your vehicle is having trouble starting - trouble that cannot be traced to the usual easy suspects, like the battery or starter motor, get it

Apr 03, 2015 | Cars & Trucks

1 Answer

What does it mean when the red "security light comes on while I am driving?


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/

Do It Yourself GM Security bypass

Oct 27, 2014 | 1998 Buick Century

1 Answer

HOW TO DISARM SECURITY SYSTEM


The system is automatic and disarms as soon as the key is used or the remote. If it is locking you hurt then it has a fault in the system and you need to have the security system scanned by the GM dealer to see what is locking you out.

Jul 04, 2012 | Cars & Trucks

1 Answer

2006 cobalt wont start, car with locked icon thru it. Manual locks


You have just fortin stung by GM's antitheft security system. The most failed system ever on GM vehicles. Go to this link for help and info. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Aug 23, 2011 | 2006 Chevrolet Cobalt

1 Answer

I havw a 1994 eldorado. The ignition swithch and air bag were yanked out. Now the car says something about a security system what do I do


The Passlock security ignition is an intricate part of your cars anti theft system. Disrupting this system will lock your car from ever running again. Info and solutions to GM's security system on that's link. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Jun 19, 2011 | 1994 Cadillac Eldorado

1 Answer

My hummer h2 03 is not gettig start it shows big lock in the dash. some one told me its security lock?


The security transmitter in the key could be bad, or the passlock system is bad. try taking it to a GM dealer, so they can reprogram the system

Feb 25, 2009 | 2003 Hummer H2

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