2012 GMC Sierra 6.2 6l80
When cruising at 60 mph and we stomp the gas to the floor, it downshifts from 6th to 3rd very hard. I'm having a hard time figuring out what I need to adjust to soften it up.
Scan and tune are included
Downshift occurs at frame 4737
drive tune3.hplMariotune87oct2.hpt