I have a 2003 Pontiac Vibe. I took the car to get it washed this week and realized after getting home that there was an issue. The plastic cover that encases the rear hatch light (on the roof of the inside of the back of the car right up against the rear window) is missing a piece that was holding it in place. It appears to be some sort of "push clip" where you push in the middle and it pops up and there are supposed to be two of them (one on each side of the plastic cover) to hold it in place over the light. But one side is missing and now the entire cover is hanging off the light.My question: Does anyone know what kind of clip this plastic light cover takes? Is it something simple that I could just buy at Home Depot or Lowes or is it something that needs to be ordered from Pontiac? Anyone know the size??