I have a 2010 Tahoe, which i tow with, i massaged the trans tune a little, and she feels better, but i have a small problem between 2 and third shifts. Its gets up to the shift point, releases 2nd, but before 3rd has a chance to engage the rpm climbs then it shifts into 3rd and i go about my other shifts...
Cold, hot, low torque, high torque it does the same thing...
Lookin forward to all your inputs