GM Repair Problems? Ask GM Repair Expert Now.
in the passlock system on your Yukon there isn't any way to bypass the security. It uses the Bcm and the Pcm to disable and prevent theft. if the key that you have for the new column is a passlock key the only thing that needs to be done is a reprogram of the security system. I am attaching a relearn procedure tht you can do there at home. put a battery charger on the battery on low charge while performing so battery doesn't die. Let me know if you have any trouble. Thanks, Jesse
30 Minute Re-Learn Procedure
IMPORTANT: The vehicle learns the Passlock(TM) Sensor Data Code and/or password ***** the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.