see the whole problem is its a 4l60 not a 700r4 and you have confused it by calling it the wrong name so it suffers a identity crisis
(gm changed the 700r4 name to 4l60 in 91 or 92 and came out with the electric 4l60E in 93 in the pickups which the trucks could have either trans depending when it was made and at what plant that year)