I just took delivery of a new 2016 Sierra SLT 4X4 Crew Cab 5.3L with 8 speed a few days ago. 120 miles so far. I am experiencing a transmission shift jolt when coming to a stop. It is probably the trans shifting from 2nd to 1st. It is pretty harse. Seems to happen every stop. Seems the up shifts are a little more noticable than I would expect. I hope there is a calibration fix for this soon.