A CLOSER LOOK 2024 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.

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.

Heavy Duty Highlights:

• Enhanced power with the combination of the available 6.6L Duramax TurboDiesel V-8 and 10-speed Allison transmission delivering 470 horsepower and 975 lb-ft of torque and providing 25% more low-end torque vs. the current model for a greater feeling of power on demand

• Max towing across the lineup, including:

- Up to 21,9002 pounds on 2500HD Crew Cab

- Up to 22,5003 pounds on 2500HD –a 4,000-pound increase

- Up to 36,0004 pounds on 3500HD

• GMC’s ProGrade trailering system, offering up to 14 camera views

• Updated technologies including an available new, 13.4-inch-diagonal tablet-style infotainment touchscreen

The 2024 Sierra HD lineup includes 2500HD and 3500HD models, in Regular Cab, Extended Cab and Crew Cab configurations — with dual-rear-wheel models available on 3500HD. Available trims include Pro, SLE, SLT, AT4, Denali and Denali Ultimate, with the AT4X trim coming later in the model year.

Fresh and Bold - Inside and Out

The 2024 Sierra HD lineup is elevated with styling and design updates, inside and out.

Inside, GMC designers set apart Sierra with unique, new interiors on SLE, and SLT trims, as well as unique GMC premium interior designs for AT4, Denali and Denali Ultimate trims. There are also new color and stitching designs throughout, with more premium materials throughout the cabin, further elevating the Sierra’s premium look and feel.

First-ever Sierra HD Denali UltimateThe 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 TurboDiesel 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.

Inside, Denali Ultimate’s exclusive Alpine Umber interior reaches new heights of premium luxury and comfort in a heavyduty truck. Full-grain leather appointments and open-pore Paldao wood meticulously adorn the interior trim.

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.

Additional changes and upgrades were designed to produce a more efficient combustion and enhance overall performance.

10-speed Allison transmission enhances gas-engine trailering capability

The Allision 10-speed automatic transmission is now paired with the Sierra HD’s standard 6.6L gas engine. It replaces the previous six-speed automatic, offering smaller “steps” between the gears, which enables the 6.6L gas engine to hold closer to its peak power (401 horsepower and 464 lb-ft of torque) for longer periods. That translates into a more confident feeling of on-demand power, regardless of whether the truck is towing a trailer.

Elevated and Purposeful Trailering Assistance Technologies

The ProGrade Trailering System includes a suite of available intelligent trailering assistance technologies designed to help streamline the hitching and towing process. In total, the 2024 Sierra Heavy Duty offers up to 14 available camera views.

High-Tech Digital Displays

The centerpiece of Sierra’s hightech interior cabin is the new available 13.4-inch-diagonal tablet-style touchscreen. Situated in landscape orientation, the touchscreen offers a user-friendly, customizable experience. An available multicolor 15-inch-diagonal head-up display and a new available 12.3-inch-diagonal digital instrument cluster are also added in 2024 model year. Together, this creates over 40 inches of immersive digital displays helping to provide an engaging, customizable and comprehensive driving experience.

The all-new touchscreen infotainment center can be configured to a user’s preference, including the ability to operate multiple apps simultaneously in a “splitscreen” view (e.g., a Navigation app running on the left side of the screen and a Music app on the right). Sierra HD’s infotainment system will also integrate Google built-in (on all trims except Pro) allowing customers to connect virtually every aspect of their daily lives within their vehicle. The system is compatible with both Wireless Apple CarPlay10 and Wireless Android Auto.

Premium Safety Features

The 2024 model year will offer the standard, Sierra HD Pro Safety suite of driver assistance technologies, including:

• Forward Collision Alert

• Lane Departure Warning

• Automatic Emergency Braking

• Front Pedestrian Braking (new for 2024)

• IntelliBeam auto high beams

• Following Distance Indicator

Also available on the 2024 Sierra HD is the Pro Safety Plus Package6 which includes new driver assistance features Rear Cross Traffic Braking and the Trailer Side Blind Zone Alert.

Coming Soon

The refreshed 2024 GMC Sierra HD arrives at dealerships in the first quarter of 2023, with the AT4X coming later in 2023.