2000 Cadillac Seville Owner's Manual - Page 63

Both the master and valet keys have a transponder embedded into the key for security and theft deterrence. The keys also come with a bar code tag. Keep the bar code tag in a safe place. If you lose your key you will be able to have a new one made using the bar code tag. The replacement key must have a transponder embedded in it. NOTICE: Your vehicle has a number of new features that can help prevent theft. You can have a lot of trouble getting into your vehicle if you ever lock your key inside and you may have to damage your vehicle to get in. Be sure you have an extra key. Master Key Valet Key There is a master key that works in all of the lock cylinders (driver's door, trunk, ignition and glove box). There is also a valet key which only operates the driver's door and the ignition. 2-3