This is easier to do than try to explain. First of all, you don't need to remove bolts from the bumper. As you are under the truck, look at the frame. The bumper is attached to the truck frame on each side by three bolts kinda in a triangular fashion. Remove the 3 bolts from each side. Then the bumper also has a brace on each side. Remove the bolt holding the brace from the frame and slide the bumper off. About a 10 min. job with air tools. Hope you can understand these directions. Like I said it's easier to do than to explain how to do it.