Rattle like a loose piece of plastic or part

[big daddy bubba]

Weird.... Sounds like a loose nut or piece of plastic. rattling around somewhere in the drivers side front- becomes audible at about 30 mph. I have no idea how to find it. any suggestions? 

[Ottawa Boy]

Hello,

Have you been able to locate the source?

I believe I have similar issue. Its coming from front passenger seat. It stops when weight (like a person ) is put on it.

Thanks