does anyone here hear a rattling sound when ever you hit little bumps. it sounds like sheet metal. i was told that it was the heat shield underneath the car. could someone please help me with this problem? i have a 96 maxima gxe auto, thanks for you help.

 

There are several heat shields; one on the front exhaust manifold, one on the y-pipe, one on the cat. Just pot the car up on jack stands or ramps and check for looseness or contact with the body and exhaust system.