Originally Posted by
Mark Rinker
I expect you are right, DMax. In the mean time, I use my right foot as the moderator. I have limped it with a loaded trailer on a hill with the cruise control set.
Noticed today that after the boat and trailer were removed, it took awhile for the Allison to relearn its shift points. Had some harsh shifts in T/H, but turning it off smoothed things out until it adapted to no load.
I think all the early duramax trucks ran good but the trans tune limited how much power you could throw at them. The lly truck I had would deal with more HP then the 2001 , the 01 after removing the juice shifted harsh and the 2004.5 lly shifted normal right away. Makes you wander if you swaped the TCM out of a newer truck how would the lb7 act?
93 c-2500 6.5td,96 6.5td x cab,01 GMC lb7 Xcab ,2004 lly crew cab ,2006 lbz crew cab,honda CBR1100xx,2003 polaris prox 700 , 2001 31' holiday rambler 10K lbs house on wheels!