Door Hinges

Are the factory door hinges welded to the door? Or are they bolted on? Or maybe both? My driver side door is sagging and I need to replace them. Would there be any other specail tools needed? Thanks.

I believe they are bolted on. I may be wrong. Shoebox if you could chime in that would be great.

Theres obviously 3 nuts and studs on them, i'm guessing the hinges slid over the studs, and should be able to come off failry easy, i'm wondering if I should replace both or just the lower one?

Unless you can tell that there is a lot of slop in your hinges, you might just need to hinge to door adjustment. The hinges just bolt on.

Yeah I think at least one of them has some slop, proabaly the lower? Starting to rub on that plastic peice, and I'v already tryed to adjust the door, cant get it to move up very much, at least not enough to make a difference. Thanks guys.