this is in the totally wrong section. I think you are talking about the bumper as a whole. Since you stated the lower grill. You'll need to remove all the plastic screws holding the top of the bumper and grill to the engine bay. then there are i think 2 10mm bolts holding the bumper on under the engine. Its pretty simple. If you get lost, then go get a repair manual. Also, removing the grill is much easier while the bumper is off