Hi 99Hokie,
Just saw your meassage! It's been ages since I was on this forum. Now, I have an intermittent engine missing problem I'm trying to work out.
No, I never did resolve the Cat problem, and have logged in more than 80,000 mi. since then. The Check Engine light is not on anymore, but I think it's because it's burnt out. Still have the VSC/Trac orange light on, but just ignore it as well. Sorry I couldn't be of more help.