Question about 1999 Chevrolet S-10 Pickup

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Security system 00 s10

Need to reset the factory security system

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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.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Mar 21, 2014

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Perform the re-learning procedure

  1. Turn ON the ignition, with the engine OFF.
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I need to reset a passlock system in my 1998 Chevy S10 2.2L standard that I just bought from someone who gave up on trying to fix it. My security light is flashing in a specific 3sec., 1/2sec., 5sec.


  • 1 Insert your key in the starter, start you caricon1.png as you usually would and let it stall. Keep the key in the "On" position. In other words, don't turn the key back to the "Off" position. You will know the key is in the "On" position because you can use the A/C, radio and see all the lights on the dashboard when it is in the "On" position.
  • 2 Wait until the "Theft Sys" light on your dashboard stays on without blinking. This will take approximately 10 to 15 minutes.
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  • Read more : http://www.ehow.com/how_7595689_reset-passlock-system-gm-cars.html

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    Answer If it is a factory (OEM)security system. Go to passenger door and
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    I hope by now you may have found your problem. If not here is one possible solution. It's possible your battery might have gone dead, or you may have changed your battery at one time. Which will offset your factory security system. There is a video on YouTube that will guide you on how to reset your factory security system. You may find it under reset security system for your year, make and model gm product. Which may consist of leaving the key in the on position for at least 10 mins. Hope this works and Good Luck.

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