Gmc Sierra Denali 2500 Diesel 2025. Compare all 2025 gmc sierra 2500 hd crew cab trims in one place. Pro, sle, slt, at4, at4x, denali, and denali ultimate.


Gmc Sierra Denali 2500 Diesel 2025

View detailed specs, features and options for the 2025 gmc sierra 2500hd 4wd crew cab 159 denali ultimate at u.s. We’ve tested a sierra 2500hd denali with the diesel engine, which returned 17 mpg on the highway.

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