Alright, so this very well just might be that it's this 4L65E's time to go, but I wanted to at least run it by you guys first.
Vehicle is a 2004 Silverado SS with 190k miles on it.
I'm experiencing slight shift flare on the 2-3 shift, but only under low part throttle up-shifts, and it gets worse as trans temps climb, however at WOT the 2-3 shift is fine. 1-2 and 3-4 shifts occur just fine at both part throttle and WOT. The truck has 190k miles on it, but I'm not sure if the trans has ever been reworked. It has a new transfer case, so who knows.
So far I've played around with increasing the 2->3 Pressure Modifier table and the 2->3 Shift row in the Upshift Pressure Multiplier table, but it hasn't appeared to have helped.
Attached is a short log showing a couple of part throttle shifts and a WOT shift, along with the tune file. I can gather more logs tomorrow if there are other parameters I should be logging.
2004 Chevy Silverado SS - ShiftTune_v6_2-3upshiftpressuremultinc25per.hpt20200204 - 2004 Silverado SS 2-3 Shift Flare.hpl
Thanks,
Austin