I have a clanking/rattling sound coming from under the car on the rear drivers side. All can say in describing it is it sounds like a rather thin metal shroud or other part rattling under the car. Growing up in the seventies and eighties I remember this being a common noise on many car models. Any advice on finding the culprit? I’ve felt around some but can’t find and loose parts. Shocks and springs replaced. So not the shocks. Muffler replaced so not suspect. Maybe a heat shield or something. I’ve read other posts on this but haven’t found anyone who documented solving the problem.