Depending on the year of manufacture, the mounting points may differ.
Front bumper
-open the hood.
-Unscrew one nut on each side and pull out the turn indicators.
-under the turn indicators, we pull out one pistol on each side.
-pull out the pistons and Unscrew the screws that fasten the lower part.
-turn the wheels out of the way.
-in the wheel arches, Unscrew the screws and release the slats (front part).
-behind the slats, we Unscrew one screw on each side, which attaches the corners of the bumper to the fenders.
-with an assistant, we pull the bumper forward (look for the wires).
-remove the connector from the fog lights (if present).
Rear bumper
-open the trunk lid.
-pull out the pistons in the opening of the trunk, which attach the upper part.
-Unscrew the screws and pull out the pistons from the bottom side (twisted and inserted from the bottom up).
-in the wheel arches, we Unscrew the screws that fasten the undercarriage and bumper corners.
-with an assistant, we pull the bumper back from the rails (look for the wires).
-remove connectors from electrical equipment (if any).
How to remove the front and rear bumper Pontiac Montana (2005-2009)