The 4l60 uses a t42 tcm that is external to the transmission. The 6l80 uses a t43 transmission controller that is built into the Transmission and controls the valve body directly.
Gauges will depend on the ecm talking on vpw to Controll the gauges. My rig has a full power train swap but I have not yet tried to get the oem gauge cluster to work with the duramax yet. I believe it can be done but I may have to build a converter to convert the signals.
Ryan
Gauges will depend on the ecm talking on vpw to Controll the gauges. My rig has a full power train swap but I have not yet tried to get the oem gauge cluster to work with the duramax yet. I believe it can be done but I may have to build a converter to convert the signals.
Ryan