Gmc Sierra 2025 Denali Ultimate 2025. The 2025 gmc sierra 1500 denali ultimate is the absolute top rung in the brand’s luxury truck hierarchy. The denali trim moves to second place in the sierra hd’s hierarchy for the 2025 model year with the introduction of the new denali ultimate trim, available for both the 2500.

It completes a quarter mile run in 14.9 seconds. I have the very large and very luxurious 2025 gmc sierra 1500 denali ultimate.