Need some technical knowledge. I am going to be replacing the transmission in my truck, 96 GMC K1500. The issue that I am running into is that 96-97 were stand alone years for the 4L60E and they are hard to find in my area. However the 98 and up 4L60E are easy to find but they do not interchange with the 96 due to different internal electronic controls. My question is, would it be possible to switch my current ECM with one from a 98 in order to use a 98 and up 4L60E? Any help will be greatly appreciated.