Please be advised that the "GM 4L80E" wiki page has an error.It states the 4L80E was available in C/K Pickups starting in 1995. I have a 7.4L Engine 1993 with option code MT1....a 4L80E.
Further note that on the "GM Transmissions" wiki page that this model of Transmission was available as far back as 1991...or so that page says.
So there is a conflict of data here. I thought it was important to correct it.