What's this sound? (video)
 

https://youtube.com/shorts/-NKGH8Ep2PM?feature=share

Is this my torque converter? Sounds like something is loose. But sometimes this noise persists while sitting stationary with the brake applied. I can feel (it grinding?) through to the pedal & in my seat too.

No idea what this is. It's at the dealer now, but man I'm concerned...

I hear a lot of you moving around. I'm not sure what that sound is. Does it only happen when in gear? If it happens in park or neutral, have you opened the hood or listened underneath?

I also hear what sounds to me more like sheet metal vibrating. Not related to your converter suggestion, this sound reminds me of what I’d expect you would hear and feel like if the transmission tunnel brace was somehow loose.

Figured it out!

Exhaust clamp came loose, little bastard