Rattle front under driver's seat wheel well areas

[yosM45]

Anyone else experience what sounds like a rattle/rumble that's coming from under the driver's floor board/rear engine bay/front driver's side wheel well?

We have a 2022 SXP AWD.

It's only audible at slower speeds like 23-30mph.

We do have the Blackhorse Peerless Running boards which required some trimming of the underbody panels, but they're pretty stiff and bolted down all around.

Any ideas before I take it to the dealer would be appreciated.

 

[Dally41]

We had a similar issue and it ended up being wheel bearings failure. It has now been in the shop since Jan 19th waiting on parts and working on another annoying issue that they apparently have no explanation for.