I had my window regulators replaced and now my passenger window squeaks anytime I go over a little bump or even when my music’s bass is heavy. I read that squeaky window can be fixed with some lube, and I’ll give that a try but as the window wasn’t squeaking before the replacement I don’t think it’s the rubber seal’s fault.

I didn’t do the regulator change myself as I was in a rush and want to take this up with my mechanic but usually need some technical jargon to back up my complaints. Can a regulator be loose or something that would cause the window to jiggle and squeak?