Denali Hd 2025. Explore the 2025 gmc sierra 2500 hd & 3500 hd denali luxury truck. In addition to the standard gasoline engine, gmc is introducing a new trim level for the 2025 model year, the gmc sierra hd denali ultimate.
In addition to the standard gasoline engine, gmc is introducing a new trim level for the 2025 model year, the gmc sierra hd denali ultimate. Adaptive cruise control with trailering assist, previously standard on the 2024 at4x and denali ultimate trim levels, now comes on the at4 and denali trims as well.