Customer States: Rattle Noise (No Warranty) Crumbling Catalytic Converter Tahoe 5.3 #repair

Bearded Ford Tech Merchandise https://rainmanraysrepairs.com/produc... AMSOIL www.amsoil.com/?zo=5124952 Customer complaint of a rattle noise coming from under the vehicle. Transmission? Exhaust? Catalytic Converter? Check engine light is not on. Ended up being the inside of the driver side catalytic converter crumbling apart, making a ratlle.