If you're talking about on 01 Alero that's easy. Put the key in and turn it to the on position leave it for 10 minutes and then take the key out leave it for about 5 seconds and then try starting it. Note: make sure the security light has quit flashing on the dashboard. My alero has done this several times, and I've had friends try it in grand am's and this works too. it has something to do with resetting the system. Hope this helps you out.
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Its in the key switch
The security light on a 2001 Chevy Astro Van can be reset by disconnecting the battery for 30 seconds. This resets the system and turns out the light until another problem is detected.
Chrysler does not use reset switches.Chrysler does not use reset switches.
Leave the radio on for 1 hour and it will reset and then accept the 5 digit security code.
Put a new battery in my 2001 quick lasabre and now my radio won't work
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