Depending on the model year and body type of attachment may vary.
Front bumper
-open the hood.
-under the hood take out the caps, Unscrew the screws that secure the top.
-wrenched the wheel, depending on which side we understand.
-wheel arches Unscrew the screws that attach the fender liner.
-Unscrew the screws (spun upwards) holding the corners to the wings.
-at the bottom, Unscrew the screws (spun upwards) that secure the side.
-engine side Unscrew two nuts from each side that secure the amplifier to the body. You can remove the bumper without amplifier. To do this, take out the clips that secure the amplifier to the bumper (you need to remove the headlamp covers and fog lamps) but with power bumper is removed easier.
-with the assistant gently pulls the bumper forward (don't want to break the wires).
-remove the connectors from the equipment (if any).
Rear bumper
-open the boot lid and Unscrew the aperture screws that secure the top.
-in the trunk remove the trim panel.
-(T200) Unscrew the nuts from the trunk in the rear.
-for skins, wings, Unscrew the screws and nuts.
-Unscrew the screws that secure the side (spun up).
-Unscrew the screws in the wheel arches that secure the fender liner.
-the fender liner, Unscrew the screws (spun upwards) holding the corners to the wings.
-climb up under the car and Unscrew two nuts on each side that attach the bumper to the amplifier rear panel. Can be removed without an amplifier to do this, remove the tail lights and pulled around the circle caps. To properly remove the amplifier.
-with the assistant gently pulls the back bumper (don't want to break the wires).
How to remove front and rear bumper Chevrolet Aveo/Sonic T300