2025 Gmc Sierra 2025 Denali 3.0 Duramax. Maximum towing capacity of every 2025 gmc sierra 1500 trim model level. Gmc recently announced the second iteration of the duramax engine, which will be available on the 2025 installment of the sierra 1500.

In the following gm authority breakdown, we’re taking a closer look at the 2025 gmc sierra 1500 towing capacities with ball hitch and gooseneck configurations. 2025 gmc sierra 1500 at4 the big news is the duramax diesel engine, with is surprisingly smooth and quiet.