One day my door just randomly started not wanting to close. It's been getting worse, and now I have to do the little hip nudge to get it to close all the way. Is this something I can adjust myself, or do I need to take it to someone? If I can do it by myself, where do I start?

 

Sounds like your hinge pins, not as easy a job on a Ford, Chevy's are easy in that respect. I recommend taking it to a reputable body shop.

 

I agree, sounds like the pins. They really aren't too hard to replace though.

 

Yeah the pins have a little brass bushing that can wear out