I'm looking to buy a 2006 Chevy Cobalt. It's perfect mechanically. It just has a few cosmetic issues, one in which involves the driver side door. The door is loose and moves up and down when you move it which is I guess from the wear and tear of opening and closing of the door. I'm assuming it'll need tightened to prevent the need to slam the door to latch it. So my question is how much work will need done in order to fix this problem.