I have an issue with the downshift of my 2011 Sierra 6L80E. If I am cruising from 40 to 45 MPH and do a quick Wide open accelleration the transmission downshifts to 1st gear hits the RPM shift point of 5900 and then shifts to second gear instead of just shifting into second gear. I posted the tune does anyone have an idea. It looks as if everything is setup properly I must be missing something. Thanks for the help.