I have a 2000 Silverado where the push pins that hold the plastic extension on the bottom of the bumper have fallen off. Does anyone have an idea of how to identify the pins that go on the corners of the bumper. I asked two dealers and they have no spec on them but they have a box full and they will give them to me if I know what ones I need, that won't work because I have never seen them. I have checked the sites that carry those types of push pins but they only sell them 10 or more minimum, that could get expensive when you are guessing what you need. Anybody have a answer? thanks.