Hi, I was looking for information about shift points on a 94 4T60e and saw your question. There is a place in Indiana called Sinister Performance. They tune a lot of lines of GM cars including mine (94 Bonneville SE) You can mail him the eprom out of your cars ECU (or from a backup computer from a JY $50) He'll burn it however you want and ship it back to you for $71.00usd total. That's for a basic tune. For more complex burns the price can go up.
www.gmtuners.com. THe 94 se is not a heavuly supported platform any more so it's good he still doing this.
Kris