After reading the thread about disabling learning, I poked around the tune for a 99+ LS1 PCM, and noticed D0409 "Shift Pattern Select". Does this mean that if you have an LS1 based vehicle, if you don't have a switch, you can add one and turn it on in the tune and it'll work as if you had one originally? The other question is, what's "Manual Mode" and how do you use it? It SOUNDS like you manually tell the PCM when to shift , but how would you do that?
