My 83 T-Top Z/28 was tight as a drum when I ordered it new from the factory. It took just a few years for the rattles to start. Is this common to all Third gens or just the T-Top cars? I can jack up one corner of the car and can see the doors go out of alignment, so it definitely flexes. I'm really not sure if it's just the body, as I can hear the back hatch and doors rattle too. It seems like I can remember my wife's 82 Camaro 6 cylinder coupe not being near as noisy as mine when it was about the same age.

Larry

 

all fbods are prone to being rattle traps, as for your doors, you might need new bushings, its a pretty common problem