2024 Duramax Horsepower

2024 Duramax Horsepower.  — we’ve got one of the first 2024 duramax gmc sierra denali 3500 hd ultimates in the shop, and it’s on the dyno! In gale’s latest video, he runs it on our chassis dyno to see how much of gm’s claimed 25 horsepower increase actually makes it to the wheels.

Our truck tips the scales at 5,770 pounds, with a full tank of fuel and no occupants. However, cummins engines aren’t the only diesel platform dallaire’s works on.