First the service anti theft light came on and stayed. The I could not get the key out of the ignition. The radio would not shut off and the battery died. I got key out , but it still gets stuck when I put back in ignition switch.
Don't screw around with a dealer for the lock. Cadillac does not manufacture locks and keys. Subbed out to Strattec and Huff. The same place the locksmith purchases new components. Call a local locksmith who will come to you for half the price of the dealer!