Just making sure I'm not missing anything... I was cleaning bug guts off the front of my Equinox today...and near the bottom of the front bumper, below the license plate, there is the short, but wide hollowed out area of the bumper, you look through that and can see the radiator....is there supposed to be a kind of grill there? Is there supposed to be something there that would stop rocks from hitting the radiator? Just seems odd to me, and want to make sure I'm not missing some part or something...