Very Strange Noise.. HELP!

[cecil-1]

markdoddridge do ya know if its the cat coming apart? or is it just the heat shield rattling on the cat? If its just the shield rattling on the cat that is usually an easy fix with a band clamp.No need to replace. if the cat is coming apart itself it does need replacing. Would be alot cheaper just gettin a band clamp or two and some seafoam to clean the fuel system.

ETA im no mechanic but with those issues i just dont see how this vehicle would be considered unsafe. im sure someone with much better knowledge of hummers than me will chime in soon enough.