jhkanda

I was cleaning my car and noticed at the bottom of the driver's side door there are two holes but I was missing one of the plastic plugs. The one that was missing looked like it had a piece of a window guide sitting in the base of the whole. It had a screw to adjust and plastic guides in a clamp. My window works fine but rattles a bit when both are up and the top is down. Will reinstalling this guide stop the rattle and is it an easy process? Thanks.