Thank you very much for the informative post. You are clearly an asset here and you got the problem right on the money. Before I saw your post, I was googling my codes and came up with a post on a Lumina board. A guy had the same problem as me and the same three error codes. Someone posted back that didn't have a trans problem, he had a blown fuse.

Went right to my fuse box and found that the 15A minifuse, middle right was blown. Couldn't read the box cover too well but looked like it said TCC. If so, that makes a lot of sense - no power to the torque converter to lock up. Put in a 15A fuse, cleared the codes, drove it for a half hour and it's fine. Dives great and no codes.

Seems like that was the problem. But I'm wondering - why did the fuse blow in the first place?

Any ideas.

Thanks...Boatman