I can lock my truck into 4 wheel drive from inside the truck by turning a dial. I was told that the piece behind the center cap was going to keep that tire from locking into 4 wheel drive. I dont know what the piece is called. I dont know if the entire hub needs to be replaced or if that piece is something that can be replaced. All I do know is that it was there before I went food shopping, when I came out it was gone. Now winter is coming and I have to find this piece to have 4 wheel drive. If I cant find the piece and must change the hub itself, can it be replaced with manual locking hubs?