just noticed lately with my setup: 3.29 gearing, GM auxilary trans cooler, and 180* t-stat. th weather's been no higher than 40*F and i recently noticed my tcc wont engage until it reaches ~93*F according to my LS1M. i was told from a few others that their tcc engages at other temp ranges such as 70*F but i dont know if they were using a trans cooler or not and the trans fluid heated up quicker than mine. also on days where the ambient temps were above 40*F(which is rare since its still winter) i noticed my TCC wouldnt engage until roughly 110-115*F. anyone know why? trannyman? anyone? i havent paid attention to where my engine coolant temp(ect) was at when my trans temp reached 93*F or at 110-115*F. so is this PCM controlled or just how the fluid is being circulated based on the temp of the fluid or a little bit of both?