2025 Yukon Denali Ultimate Diesel. The motortrend buyer's guide has the 2025 gmc yukon denali specs you need, from dimensions and cargo space to power and mpgs. Get ready, the new 2025 gmc yukon lineup is coming—and it’s designed and engineered to set an even higher standard for premium suvs.

It has custom features like. This engine is standard on at4 ultimate, denali, and denali ultimate trims, and is optional on the at4.