2024 GMC Sierra HD

2024 GMC Sierra HD

Led by the first-ever Sierra Heavy Duty Denali Ultimate, the 2024 model year takes the Sierra HD lineup to new heights with premium luxury and comfort, turbocharged pulling power and elevated technology - offering the most trailering assistance technology in its class. In addition to the debut of the Denali Ultimate trim, the 2024 Sierra HD will build upon GMC's premium off-road offerings, introducing the off-road optimized Sierra HD AT4X trim later in the model year.

2024 GMC Sierra HD

First-ever Sierra HD Denali Ultimate - The Most Advanced and Luxurious Pickup in its Class


The first-ever Sierra HD Denali Ultimate is the most premium, luxurious and technologically advanced Sierra HD yet, equipped with unique enhancements to the overall design and premium interior appointments, more standard technologies and standard turbocharged performance with the enhanced 6.6L Duramax Turbo-Diesel and Allison 10-speed transmission. The Denali Ultimate is distinguished by an exterior featuring a unique grille and GMC badging in exclusive Vader chrome, along with exclusive 20-inch Ultra-bright machined aluminum wheels with High Gloss black accents, and unique fender badging featuring topography of Mount Denali, the highest point in North America. Additionally, Denali Ultimate will include a six-way MultiPro Tailgate with a standard Kicker audio system. Power assist steps also come standard.

2024 GMC Sierra HD

More power, greater refinement for the Duramax Turbo-Diesel


The available enhanced 6.6L Duramax Turbo-Diesel, paired with the 10-speed Allison transmission, now delivers 470 hp (at 2800 rpm) and 975 lb-ft (at 1600 rpm) of torque, offering more power across the entire operating speed range. Specifically, low-end torque production increases up to 25% compared to the current model for improved towing performance. The 2024 GMC Sierra HD will also offer best-in-class 2500 Crew Cab towing of up to 21,900 pounds and max 2500 towing of up to 22,500 pounds, enabled by a new available Max Tow Package. Additional changes and upgrades were designed to produce a more efficient combustion and enhance overall performance.

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