2005 Cadillac CTS Owner's Manual - Page 91

Canadian Owners: If you lose or damage your keys, only a GM dealer can service the theft-deterrent system to have new keys made. To program additional keys you will require two current driver's keys. You must add a step to the following procedure. After Step 2, repeat Steps 1 and 2 with the second current driver's key. Then continue with Step 3. To program a new key do the following: 1. Verify that the new key has PK3+ stamped on it. 2. Insert the current driver's key in the ignition and start the engine. If the engine will not start see your dealer for service. 3. After the engine has started, turn the key to OFF, and remove the key. 4. Insert the key to be programmed and turn it to ON within ten seconds of removing the previous key. 5. The security light will turn off once the key has been programmed. It may not be apparent that the security light went on due to how quickly the key is programmed. 6. Repeat the Steps 1 through 4 if additional keys are to be programmed. If you are ever driving and the security light comes on and stays on, you will be able to restart your engine if you turn it off. The theft-deterrent system, however, is not working properly and must be serviced by your dealer. Your vehicle is not protected by the theft-deterrent system at this time. In an emergency, contact Cadillac Roadside Assistance. See Roadside Service on page 7-6. 2-21