Buzzing/Rattling coming from muffler area at about 1500 rpm
#3
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I'll try to post a video of it at some point soon. It sounds like a metal-to-metal vibration. It is not drivetrain related at all. Definitely something in the exhaust behind the rear axle.
#6
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2010s have a few instances of the actual baffles going bad inside the mufflers. If you are under the original 3yr/36K miles mark....it will be covered under warranty....if not get a real catback/axle back anyway!