I fear you are correct. About 50 miles in I was thinking I was home free, but the damn light clicked on when I got to school again. I am going to leave here today and raise the Vibe and take a look at the CAT again and see if I can spot any damage. I am pretty sure it is the CAT, but I would hate to...

I'm new to this site so I hope I am posting in the correct spot. I wanted to share my experience this week with a PO420 (catalytic converter bank 1, something like that) code that I have been trying to figure out for some time. I want to spare you a lengthy explanation so I will just list the steps ...