2025 Duramax Denali. As we can see from these tables, the 2025 gmc sierra hd model with the highest towing capacity rating is the 3500 hd regular cab / long bed drw (dual rear wheel) with. The fit and finish is outstanding plus the gas.

And an available max towing capacity of up to 36,000 lbs. Carpro show host jerry reynolds reviews the escalade of pickup trucks, the 2025 sierra 1500 denali ultimate equipped with the duramax diesel engine.