1997 Cadillac DeVille Owner's Manual - Page 68

When a new Cadillac is delivered, the dealer removes the plugfrom the door key. The plug hasa code on it that tellsthe dealer ora qualified locksmith how to make extra keys. The ignition key has bar code tag a attached to it rather than a knock out plug.Your dealer or qualified locksmith can make extra ignition keys by reading the bar code tag. Keep thebar code tag andthe door key plugsin a safe place. If you lose your keys, you will able to have be new ones made using the plug or bar tag. code The oval keyis for the doors and all other locks. NOTICE: Your Cadillac hasa number of new features that can help prevent theft. can havea lot of You trouble getting into your vehicle you ever if lock your keys inside and you may have to damage your vehicle to get in. Be sure you have extra keys. 2-3