First try reprogramming the anti theft as follows
Ignition to "run" position, try to start and let key return to "run" position
Approx ten minutes security light will go off
Turn key "off" and wait 5 seconds
Repeat 2 more times for a total of 3 relearns.
Turn key off, then start it
Unfortunatly you need a scan tool to reprogram the key fobs. Sometimes like all computers they drop them and they need to be reprogrammed. If that doesnt work it could be a problem with the BCM or the Remote Control Door Lock Receiver
Thursday, February 5th, 2009 AT 7:33 AM