[1969 GMC]

well i finally got the 3 hour job from hell done. i opened up the door, and found out that basically the mechanism just needed some lube. it was workin ok, then i slammed the door and it wouldn't shut, just bounce back open. i have to disassemble the mechanism and discover that about 3 pieces of it are missing.
a little work with a magnet and i find all the pieces in the bottom of the door. the rivet that holds that catch that the outer door button presses had fallen out of the mechanism, and the catch, spring, and rivet fell into the door, letting the gear on the catch just spin. now I am done (finally) so if your doors are acting up, check the rivets in the mechanism!