i was coming home from the city today and i was getting this really loud Vibration or Humming sounds from the front Drivers side...it sounds like a Busted Wheel Bearing or 4x4 Locked....i just got my truck checked yesterday and everything in the front end was tight and good to go..It was -5 outside weather when i was coming home..Would anyone know what else i should check out or get checked..After about a half hour,,the noise went away...