Did you set D2903 and D2904 to max value...?
Think goldberg upped the TCC min/max apply to like 90% for low and maxed the high PWM table. I do a similar mod with my I6 tunes, everyone loves the TC ramping in faster and locking quicker.
~Erik~
2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.