towing with gm 6.6 gas

I had a 2020 Silverado reg cab dually. It was one of the first with the 6.6 gas. I had it for 14 months, and towed gooseneck trailers with 14 hay round bales, and my travel trailer. It towed wonderfully in Michigan. I never had a chance to tow anything out of Michigan.

I did have one point when towing the 15k hay trailer, that was uphill from a traffic stop. And I had the stop each time. The truck did great.

I have towed the same with the new Duramax, and yes, it is better. I had no issues with the gas engine.