Depending on the year of release of the attachment can vary.
Front bumper
-open the hood.
-under the hood take out the rivets that secure the upper part.
-from the bottom take out the rivets that attach the lower part.
-wrenched the wheel to the side.
-in the wheel wells, Unscrew the screws holding the fender liner (front part).
-move the wing flaps to the side and Unscrew the screws holding the corners of the bumper to the wings.
-we release the latch in the wings (pulls the corners of the bumper itself).
-with the assistant pulls the bumper (look for wires).
-snap together the connectors of the equipment (if any).
Rear bumper
-open the trunk lid.
-in the opening of the trunk, take out the clips that secure the upper part.
-take out the caps from the bottoms.
-in the wheel wells, Unscrew the screws holding the wheel arches and bumper corners to the wings.
-we release the latch in the wings (pull the corners themselves).
-with the assistant gently pulls the bumper (look for wires).
-snap together the connectors of the equipment (if any).