Replacement CAT on Firehawk 2001
When the second cat went I just went back to the muffler shop. They replaced it and it was cheaper than the first round.
Do you have a good local GM service manager you can deal with?
GM issued a letter to the known owners that would allow repair or replacement.
Don't remember all the details, but do some research & see what you can find.
Maybe someon else here will chime in with info.
There are many people around here that remove the system for installing headers & off-road y-pipe.
Search the parts for sale forum for a good used set.






