Well hate to say this, but my 2016 LTZ 6.2L 8spd tranny is at the dealer with an early diagnosis of a transmission failure. I have 34,000 on the ODO. Honestly the transmission when new shifted like butter, and then around 12,500 I started experiencing some hard shifts. Dealer reflashed. Then around 24,000 miles the symptoms re-appeared, they supposedly did the updated re-flash. Took in yesterday at 34,000 miles for routine service, and the transmission was still experiencing hard shifting AND delayed engagement in D or R AND some erratic RPM bounce. It wasn't all the time, but it was noticeable. Also my sliding rear window is getting replaced- on the passenger side a soldered electrical something or another (looks like a clip of sorts) fell off. They son't repair- they replace.. Man I really love this truck. I've logged 34,000 miles in 18months- so comfortable. Don't know if I can put up with an unreliable transmission. I go to some remote places and it would SUCK to get stranded 50-75+ miles from closest tow facility!