Denali Ultimate 2025 Hd. 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 2025 gmc sierra hd denali ultimate, refreshed for the 2025 model year, is gmc's most premium, luxurious and technologically advanced truck yet.
It completes a quarter mile run in. 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.