Question about 2000 Pontiac Firebird

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On dashboard, security light comes on

I have 2000 pontiac firebir. security just came on dash board. what causes this? first made car not start, then waited few minutes and it turned over

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The security system used on this car is the same as its been the past 15 years. ( I have seen firebirds with chip in the key as early as 1987.) The chip is a resistor. The engine computer must see the same resistance from this chip as it expects. First try cleaning the key with alcohol or some other solvent. Then try cleaning the ignition switch by inserting the key into the keyhole repeatedly. This should solve your problem, if not...... Then measure the key's resistance with an ohm meter and remember that value. When you get a new key made for the car, you will have to tell them this resistance value so that they can match up the closest one. (if you loose the key, it will be harder because the car locks itself out for a certain amount of time each time a wrong key is used) The mechanic will have to try one key per half hour until he finds the right one.) As a last resort you can buy a resistor from radio shack with the closest number to your ohm meter measurement, disconnect the wire going to the security in the stearing column, and insert this resistor into that connector.

Posted on Jan 31, 2009

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The light has come on because there is a fault in the system, have it tested by the dealer for a trouble code, they are the only ones that have the test equip. to address this problem.

Posted on Oct 17, 2008

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Hi!!
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Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa!!

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