Passenger side dash metallic tapping noise

[Matahoe]

I've got a noise directly in front of the passenger dash more near the firewall. It sounds like a dangling wire hitting a panel of shear metal. It's quite loud when driving seems to only make noise going over bumps. I have ruled out suspension and wheel brakes as a cause. I put my ear up in that area of the dash closest to the firewall. It sounds like maybe the antenna or some other heavy gauge wire may be loose.

 

[M1Gunner]

In my opinion, the Heat shield on your passenger side catalytic converter is a good place to start looking. The welds begin to come lose over time and sounds horrible.

Sometimes you can raise the idle of the engine to approx 1500-2000 rpm and you'll get it to rattle which will be a dead give away that it's a cat's heat shield.

 

[Matahoe]

I took it back to the body shop. They found the front quarter panel cracked in a few places.