Originally Posted by Max Capacity
Check the bottom of the passenger side doors behind the rubber weather strip at the seam of the door skin. Mine has a little surface rust there.
Check around the windshield seal in the upper corners and the crease of the roof above the windshield, that's also a known rot spot.
Another spot is where the metal meets under
the door sill guard, generally passenger side more than drivers side.
I can't think of anything else that is prone to rotting in these cars, my drivers side door has bubbles under the paint at the bottom crease due to a shotty paint job thanks to the P.O taking the car to those idiots over at Suburban Collision (Fisher Body).