Depending on the year of release of the attachment can vary.
Front bumper
-open the hood.
-under the hood, take out the three clips that secure the upper part.
-from the bottom Unscrew the screws and take out the rivets that attach the lower part.
-wrenched the wheel to the side.
-wheel arches pulled three pistons (screws) on each side holding the fender liner (front part).
-release the fasteners in the wings, sliding over the corners of the bumper forward.
-with the assistant pulls the bumper (look for wires).
-snap together the connectors of the equipment (if any).
Rear bumper
-open the trunk lid.
-(if you have one) remove the cover of the bumper.
-in the opening of the trunk, take out the clips that secure the upper part.
-take out the caps from the bottoms.
-wheel arches pulled three pistons on each side that attach the fender liner.
-release the fasteners in the wings, pull the edge of bumper ago.
-with the assistant gently pulls the bumper (look for wires).
-snap together the connectors of the equipment (if any).