Question about 1998 Pontiac Bonneville

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Security light let want let my 98 bonneville start

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The security light 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.
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Posted on Sep 22, 2014

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SOURCE: 99 Bonneville wont start, Security light on

how to get the security light off and to get my car off security so it will stay running

Posted on Apr 18, 2010

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1998 PONTIAC BONNEVILLE NOT STARTING


did you already make sure the theft system is not triggered???? the security light will blink on dash, when the key is on. if blinking, email tobias_vette@yahoo.com for how to reset this.

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