New 2024 Gmc Sierra Hd. The sierra hd denali ultimate and the sierra hd at4x. The 2024 gmc sierra hd features two new trims designed to boost the truck’s appeal (and sticker price):

The new 2024 gmc sierra heavy duty—featuring the first ever gmc sierra hd denali ultimate—is equipped with advanced tech & a luxurious cabin so you can tow w. The refreshed 2024 gmc sierra hd introduces new towing capacities.