kinda old news. Im stuck searching new GM information weekly to stay ahead of the tuning curve, and you need friends in the right places lol
http://www.autoweek.com/article/2013...news/130409922
http://www.rvbusiness.com/2012/02/gm...on-on-pickups/
https://www.google.com/search?q=gm+t...w=1093&bih=521
The problem I see with guys locally using the old school 4 speed transmission strategies and applying them to tune the 6 speeds. They are vehicle different transmission. As technology grows more with HP, your gas mileage gain will be in the transmission.