I live near Detroit. Several of my friends are powertrain engineers for GM. I'd be happy to have one of them chime in as well.
So would I.
A little reading for you about TM.More reading.Read post 15.And these are people that don't haul trailers and most are only pulling out 75% TM. Read the above to find out why.
BTW, TM has nothing to do with how hard or soft a tranny shifts. Anybody can program a tranny to shift as hard or soft as they want at full throttle. I could even do that with a T400 or 700R4.
IOW's OEM pulls throttle and timing out to stop breaking things and the soft shift is just a side benefit to the customer.