My driver's side door has done this since I bought the truck, and it's finally starting to really p*** me off. When I close the door like a normal human being, the door opens back up partially. It's still latched, just not completely. If I slam the hell out of it, it will close all the way, but the colder it gets the harder it is to close it. Now I have to roll the window down and grab the door that way and slam it as hard as I can. It looks like the door lines up properly with the striker, so I'm guessing it's the latch. Just wondering if anyone else has had this problem and what the fix is before I go shotgunning parts.