EASY FIX : Metallic rattling rattle noises on a Nissan or Infiniti?? On idle? On reverse?

In short, Nissan and Infiniti are good affordable cars, especially when used but their biggest weakness are rusts , especially for any models below 2018. The exhaust / mufflers heat shield are garbage, especially if your car sees winter often (like here in Montreal). Very often, every heat shield is held by a 10mm nut and then there'll always be a riveted screw or nut. Before you bring your car to the mechanic, make sure you double check your heat shields. It can be anywhere, i have seen heat shield rattling from the middle of a Nissan Murano and Nissan Rogue.
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[@JKOnTheTrack]

Mine just actually started doing this sound so I will check that in the morning. Sounded exactly like that. Thank you.