2003 Pontiac Montana Owner's Manual - Page 136

To program the new key: 1. Verify the new key has PK3 stamped on it. 2. Insert the ignition 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 RUN within 10 seconds of removing the previous key. If you are ever driving and the security message comes on and stays on, you will be able to restart your engine if you turn it off. Your PASS-Key@Ill system, however, is not working properly and must be serviced by your dealer. Your vehicle is not protected by the PASS-Key@Ill system at this time. If you lose or damage a PASS-Key@Ill key, see your dealer or a locksmith who can service PASS-Key@Ill to have a new key made. 5. The security message will turn off once the key has been programmed. It may not be apparent that the security message went on due to how quickly the key is programmed. 6. Repeat Steps 1 through 4 if additional keys are to be programmed. 2-29