904 no drive

The governor affects both the 1-2 and the 2-3 shift. So..with no 2-3 whatsoever, but do have a 1-2; that leaves vb. But so that we all understand; please clarify when you get a 1-2 shift. Just driving normally in "D"? Just driving normally in "2"? Only get a 1-2 shift when moving the lever from 1 to 2? And at what speed? Might just be something as mentioned about the 2-3 shift valve, but that's unusual. But who knows what somebody might have done inside of a valve body to cause this condition; might be a comedy of errors. Study exploded views.