2025 Gmc Denali Ultimate Dually Towing Capacity. 2025 gmc sierra towing capacity. As with 2024, a gooseneck trailer hitch on the 2wd 3500 hd regular cab / long bed drw (dual rear wheel) configuration gives the highest 2025 gmc sierra hd towing.

The denali can tow an incredible 30,800 lbs. However, depending on the trim level and engine you select, the towing power may vary.