Yes tony It is glued to the window. Can you get a better picture of it for me so i can see which kind it is? I have plenty of them hanging around and can send you one if i can see a better pic.tonycondon said:ok michael, round two. this is the rear attachment. My plastic piece is busted, as seen, the front one was OK and is bolted on to the rail. The window is operational, but I would like to get this plastic piece replaced. Is my best bet to go to a chevy dealer? Is that thing glued to the window? thanks!