Question about 1999 Oldsmobile Bravada

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Security light flashing on my 1999 bravada wont start

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6ya6ya
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Posted on Jan 02, 2017

  • 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
  • 2182 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

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How about the ignition swich? They have been recalled on this model I think, call the dealer with your vehicles VIN and find out.

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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 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/

Sep 15, 2012 | 1998 Oldsmobile Bravada

1 Answer

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/

Nov 17, 2011 | 1998 Oldsmobile Bravada

2 Answers

My bravada 98 security light on and wont start


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

Jan 03, 2011 | 1999 Oldsmobile Bravada

2 Answers

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sounds like you need a new ignition switch the pass lock is screwing up common.

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