I have a ‘17 LTZ w/ a 6.2l 8 speed. I specifically sought this combo pull our 7200lbs 25ft TT, and also 6000lb 10x12 enclosed Scout trailer. Very happy with the setup. Plenty of power at all speeds but especially off the line at the hard stop. The only time you feel the 8 speed is in the first 3 gears. 1&2 are low, especially 1st and if you are not pulling it shifts to #2 pretty quick. After 3rd I never know what gear I’m in as the shifting is smooth and no hunting. When towing I turn on tow haul set it to M6 to lock out the 2 overdrives and it does great.
Best part is non-towing highway gas is 22 city around 13 even in the dead of MN winter with occasional Auto 4wd. Worst part is we so much power it’s literally worthless in RWD with even the tiniest amount of snow or moisture. Traction control kick and the fun ends ??