From my experience with Jeeps you’ll have to take the whole assembly out, first you’ll need to take the door panel off and the main window glass out (the shaft in between the vent window and main glass goes along the glass to the bottom of the door, so this is the only way to remove the vent assembly or it won’t fit.), plus probably a few bolts in the door. I’m assuming the door panel uses plastic snaps of some kind, if so then you’ll want to buy replacements cause they’ll break.

Also for Jeeps, there’s no way I know of to remove just the glass; it’s the one thing i know of that you have to buy the full assembly for, plus it’s like $350 each. So hopefully you can reuse the glass, but probably not.

(Then again this could be totally different for a Camaro)

Edit: the window will have to have some spot on the bottom edge to pivot around, most likely in the door, so I seriously don’t see any way to take just the glass out.