Hi guys I'm back with yet another question...... put a 2008 6.0l with the 6L90 trans in my old chevy all is well except the trans. I can't get any of the inputs to work (tap shift tow haul)! so I figured if I use the BCM from the same truck which controls this then problem solved.... not so! when I hook up my scanner I can actually see the changes I'm making by pushing tow/haul button in the BCM but when I look at the trans data it does'nt change? When I bring up the info in the proccessor (serial#,OS,etc) there is a line that has BCC is this supposed to be the BCM? cause if it is then it's blank! I'm wondering because I turned all the BCM dtc's off it won't communicate? The ECM, TCM, and BCM are all from the same truck no harness has been modified. Without these functions when I tow with it it's always hunting between 5th and 6th gear (big load) and I'm concerned that over time I'll wreck the clutches.