Why does Ford restrict auto 4x4 to Lariat trim and above!?! It is embarrassing to say that my 2012 Sierra 1500 SLE that I sold to my son got around in the snow a LOT better than my Ford 1500 XLT. Come on Ford, GM has had it on SLE FOREVER. I also like GM's auto-locking rear better, no switches to dick with! End rant.