For free, I can't complain. I'd just have to hit a junk yard up for the part I have to cut. But I suspect it's going to fit. I might open up the GP and Impala this weekend park them so I can look at both. From what I can remember, I don't think it WON'T fit as the rubber deflector piece is the same GM number for both. Worst case, a little elbow grease might be needed to massage it into place. Lots of pictures, of course, when I do it!