Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
try this theft relearn
30-Minute Relearn Procedure
Use this procedure after replacing the following components:
Important: This procedure is not available on vehicles equipped with option code (Z49 or BAE).
Important: The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.