CRUMM, you are exactly right. When I first bought my truck I was told so many different stories about the Auto/free hubs it wasnt funny. You use your switch on the dash/hubs in Auto. If you have a vaccum problem get out and lock. If you cant get a complete rotation with the front because the back is spinning, get out and lock. If you get a wild hair and just want them locked manually get out and lock. You are in no less of a four wheel drive by being in auto. Ive asked about a zillion ?s on this issue because of the trillion stories if Crumm is wrong Ill go nuts.