If they're history codes, they won't appear with the flash function (assuming that'* how you got the codes). If they're current, they will. You may have damaged the transmission by driving it dry. The friction bands on the TC may be shot. You really need to get a scantool on the car while you're driving to diagnose this. Where do you live? There'* a registry of scantool owners in Techinfo, and we may have one near you.

One more thing. I replaced the cat thinking that was the problem but no dice. The cat that was on the car was gutted out. It'* running quieter but has the same problem.

You have a transmission problem. We just need to diagnose that further. Need TC slip rpm'* in TC lockup (above 48mph with the cruise control set) and watch the 1-2, 2-3 shifts on the scantool as they take place.

I'm in Dallas,Texas. But the transmission shifts just fine. No slips or anything in normal or performance shift.

You can't tell TC slip by feel. That'* your major loss of power. If you don't want to go through this right now, disconnect your battery for 30 minutes, reconnect, and drive for a day. See which codes come back.

Your loss of power and previous problems are textbook of a shot TC.

Thanks. I'll do just that. But if it is what you diagnosed, is that an expensive repair or should I just get the whole tranny rebuilt?