You stuck in four wheel drive maybe? Forget that I just saw on your profile that you have 31's, let me guess they are on stock wheels or wheels with stock backspacing, I would say that your tire probably rubbed on the lower control arm, you can adjust that by taking off the stop bolts and adding a couple of small washers when you put it back on. It is usually the drivers side that will rub and if I remember right you add the washers to the stop on the right side to fix the left and vice versa for the other side.