Question about 1999 Oldsmobile Alero

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Security light stays on and car will not start go back later light is off and car will start. Any sugustions?

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  • Oldsmobile Master
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WHEN SECURITY LIGHT COME ON YOU HAVE PROBLEMS IN EITHER THE IGNITION SWITCH OR WORN KEYS.OR YOUR BODY CONTROL MODULE GOING BAD.THE DEALERSHIP HAS TO FIX.IF THEY HAVE TO REPLACE THE IGNITION SWITCH - KEYS - OR BODY CONTROL MODULE.THEY HAVE TO REPROGRAM NEW KEYS AND IGNITION SWITCH TO THE BCM AND PCM SO CAR WILL CRANK.

Posted on May 15, 2010

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Posted on Jan 02, 2017

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Security light stays on


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Installed a new ingintion switch know security light flashes and car will not start


this process will take about half an hour to doyou might want to put a battery charger on it on the low setting because if the battery dies in process u have to start over.first thing is try to start car,it might start then stall,when that happens leave the key in the on position and the security light will be flashing and it will keep doin it for 10 minutes,then it will stay on solid,when it does that turn the key off for 2 seconds then turn it to the on position anfd the light will be flashing agian for 10 minutes,then it will be on solid,then turn the key off for 2 seconds and then back on and 10 minutes later when it stops flashing this time u should be able to start it and the light should be off,hope this helps

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