How would you tighten a rear window? Not too sure where the bolt is on the door you’re referring to. I’ll try anything once I know how to do it.
Early on all extended cabs had a bolt in rear window and regular cabs were held in by the gasket but with the cab redesign in '98 all rear windows use the bolt in extended cab window but it's the same window used in extended cabs from '86 on... there's 8 little nuts on studs (that take a 9mm wrench) that hold the window in, the window is just sealed with some butyl rope ($16 at autozone last I bought some). Yes, all that is behind the window trim.
The nut I was referring to in the door, if you pull the door panel (T27 for the window crank, screw for the door pull and door handle and I think one more somewhere then lift up). Then peel back the vapor barrier thing and you'll see a channel in the middle of the door, there's a nut on the top of it, while there check all the fasteners for the window tracks, there's one in the front and one in the back.