You are asking about the security code on the door correct? If so yes you need to go to the dealer to get them to pull it and they'll charge you some ungodly sum. or you can look around by the fuse panel or maybe under the dash in your truck for a little square whit box that has a five digit number on it. My Expedition was by the fuse panel, but they also put that box in the rear next to the fuel shut offs on certain vehicles, so you'll just need to look around til you find it, or maybe the dealer will tell you if you ask.