What is this thing making noise?

Seems like a board under the carpet in the passenger side footwell, upper area. This board is loose and making the noise when I go over a bumb. It's not a big deal to take to the dealer but it doesn't sound right being loose like that.

Thanks

 

is your truck made of wood?

 

What if it was!

 

My truck makes a squeking noise when going over bumps to. Sounds like loose quarter panel or door hinges.

 

I wouldn't be too surprised if it is wood. My other car has pedals wood board. Whatever it is, must be missing some screws.

 

The sound is more thud-like, not squeak. I can tap on the area to reproduce the sound.