2005 GMC Envoy Owner's Manual - Page 78

This vehicle has one double-sided key for the ignition and door lock. It will fit with either side up. The key code number tells your dealer or a qualified locksmith how to make extra keys. Keep this number in a safe place. If you lose your keys, you'll be able to have new ones made easily using this number. Your selling dealer should also have this number. Notice: If you ever lock your keys in your vehicle, you may have to damage the vehicle to get in. Be sure you have spare keys. If you ever do get locked out of your vehicle, call the GM Roadside Assistance Center. See Roadside Assistance Program on page 7-5. If your vehicle is equipped with the OnStar® system with an active subscription and you lock your keys inside the vehicle, OnStar® may be able to send a command to unlock your vehicle. See OnStar® System on page 2-47 for more information. When a new vehicle is delivered, the dealer provides the owner with a pair of identical keys and a key code number. 2-4