20 MPH noise, cant find it.

When im driving at about 20 MPH I have this noise that sounds like metal on metal vibrating. At first I thought it was one of the thin metal heat shields under the truck so I got under there and looked at all of them. All of them werent touchin anything and the nuts were tight. Now im a lil lost.

I can only hear this noise at around 20 MPH and its driving me insane lol.

Any thoughts?

 

Ill check that out. And I hear it when im coming to a stop or rolling slow in traffic.

 

No

It really sounds like a heat shield rattle but all of them are tight and not rubbing anything. It also sounds like its coming from the front but who knows where it could actually be.

 

Thats pretty much what it sounds like, the cat heat shield. Ill get under there and check it out.