Question about 1998 Oldsmobile Bravada

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What is the easiest way to bypass the security light on my 98 bravada

Security light flashing and car wont start

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  • Oldsmobile Master
  • 2,224 Answers

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 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. Remember too, the TDM controls the security light. Sometimes you can have ALL the symptoms and no lights.
This link may help you.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Sep 25, 2012

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6ya6ya
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Posted on Jan 02, 2017

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  • 27 Answers

SOURCE: my bravada 98 security light

has your battery died before this happened ? or the radio taken out

Posted on Jan 03, 2011

tayjoejoe
  • 2224 Answers

SOURCE: 1998 oldsmobile bravada security light flashing car wont start

This happens due to a failed or failing antitheft system. When the system cant communicate properly, it will disable your starter or injectors and show the SECURITY light. Go to this link for info and ways to beat this system yourself.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Nov 20, 2011

  • 3 Answers

SOURCE: security light flashes

from what i have read, it is design to cut the gas supply so no one can still your car. Mine car wouldn't crank at all with the light blinking. turn the key to the on position and wait 10 minutes. turn it off and try to crank it. it has worked every time on mine. I have also read to cut the LITTLE yellow wire that runs from ignition,but i don't feel comfortable cutting wires even though you can always reattch the wire.

Posted on May 25, 2009

MECP Guy
  • 344 Answers

SOURCE: How do you bypass the security system on an

do you have an aftermarket alarm in this car

Posted on Mar 06, 2010

delgriffith
  • 97 Answers

SOURCE: Security light flashing and car won't start now

does it start at all, or does it run for about 1 second and shut off? if the latter, then it's the passlock system, and he could have a defective key or security module. the keys have a predetermined resistance value which activates the passlock system to prevent hotwiring. If it is the passlock system, then sometimes you have to wait 15-20 mins for it to reset before starting the engine.

Posted on Jun 20, 2009

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