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I have a 2001 chevy Lumina and the security light is flashing whenever key is in start position but the car will not start. I have had a mechanic look at the starter, the fuel line and battery but still wont start. I have tried the reset technique dealer told me to do but paying 500 dollars plus labor is out plse help. If I change ignition cylinder will it work.
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If your key has the black bump on the side of it, you can try to clean it. That is the resistor for the security system. The ignition reads that bump and if the resistance doesn't match, it won't start.
You have a security issue going on. Try turning the key to the on position and leave it on without trying to start the car. Wait about 10 minutes and the light will stop flashing and come one solid. Then try to start the car. Turn the key to the off position. Wait 60 seconds and then turn the key to the on position. See if the light is still flashing. If it is then try the process again. If it isn't flashing and it is on solid then start your car.
to reset security you'll ned to do the 10min key with ign. on for 3times after each 10 min turn key off briefly then back on without trying to restart after 30min or three 10min ign on cycles turn off key briefly then the car should start
Good Evening, this is a common problem with the early gm anti-theft systems. What I need you to do is go out to your car and try to start it. Then when it does not start leave the key forward in the on position for 11-15 minutes until the security light goes off, then shut the car off and start it up (it will start). If it does not try it a couple more times and you will get it running. What that does is it relearns your key again so the security system will recognize the resistor pellet and allow it to start. Hope this helps.
It may be as simple as trying a different key but the security systems on gm vehicles have had problems with the ignition cylinders going bad and preventing the car from starting.
After you replace the ignition switch turn the key to start the car and release leave the key were it stops after trying to start wait 10 minutes until security light goes out turn key to full off position then repeat the above procedure two more times for a total of three on the 3rd attempt to start car wait for light to go out then turn key to full off positoion wait 10 seconds then try to start car body control module should learn new pass code and the car should start.
Big john, J@J Automotive
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