Depending on the model year and body type of attachment are different.
Front bumper
-open the hood.
-under the hood, take out the clips and remove the trim above the grille.
-under the pickguard, Unscrew the screws, release the clips and remove the grille.
-Unscrew the screws behind the grille.
-Unscrew the screws around the perimeter of the bottom.
-wheel arches Unscrew the screws that attach the fender liner.
-release the fasteners of the corners of the bumper to the wings.
-pulls the bumper forward.
Rear bumper