I know this is a very niche product, but GM apparently doesn't sell them, and I had to actually replace the shield. This is the piece inside the bed on the K5 behind the passenger side wheelwell. Just wondering if anyone knows of a source for this thing. As my truck proved, this is a very critical piece, if the seal leaks, it rots the truck out in that area. For those that don't know what the piece looks like, it has a 90* bend where the bed meets the bedside, so making a gasket would be fairly complex. If no source, I'll RTV it, but if I ever have to pull it again, it will be hard to get out. Even with the stock foam gasket the old shield bent trying to pry it off the truck, I can't imagine how fun RTV would make the job.