That's the 6.6 gasser correct? I'd love a towing report here if/when you have one!
Probably the best gm forum is "gm-trucks.com", I'm on there (different name) frequently, they have an HD section there.
I came across this and realized I never came back with a towing report. It honestly is great to tow with. My biggest complaint about towing with my 2019 Hemi was how high it revved and just screamed while towing. my ecodiesel was so nice in that department I was a little concerned about going back to the gas.
got the new rig about two months ago and have towed it about 1,200 miles so far and it’s great. The truck doesn’t rev high at all. Actually stays just over 2k rpm wile going 70 on the highway. Being only a 6 speed transmission it doesn’t shift very often. I‘ve driven a lot of 6.0 trucks for work in the past and this 6.6 is a big improvement. Now I will say my camper is not that heavy. took it to a cat scale when we were loaded up on our first trip and it was 7,150lbs with a 1,150lb hitch weight. That hitch weight was my concern and the reason I wanted to upgrade. I can’t use a weight distribution hitch on this trailer.
So far the truck has been exactly what we’d hoped it would be. My wife commented how her armpits aren’t drenched with sweat anymore during trips because of how solid the truck feels. You can see in the picture how much the trailer squats the back of the truck even on the HD chassis.
