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. The 2024 GMC 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. They support the lineup’s highest trailering capacity: up to 36,000 pounds. Available trims include Pro, SLE, SLT, AT4, Denali and Denali Ultimate, with the AT4X trim coming later in the model year. 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 Turbo-Diesel 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 21,900 pounds on 2500HD Crew Cab – best in class
Up to 22,500 pounds on 2500HD – a 4,000-pound increase over the current model
Up to 36,000 pounds on 3500HD
Most available trailering assistance technologies in its class through GMC’s ProGrade trailering system, offering up to 14 camera views
Updated technologies including an available new, largest in-class 13.4-inch-diagonal tablet-style infotainment touchscreen
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 heavy-duty truck. Full-grain leather appointments and open-pore Paldao wood meticulously adorn the interior trim. The wood’s darkened finish creates a distinctive color blend, while the unique graining adds bespoke attention to detail. Additional content includes:
Full-grain leather-wrapped door panels with etched stainless-steel speaker grilles
Full-grain leather front and rear seats with the Denali Ultimate badge on the front seatbacks and center console lid
All-new 16-way power-adjustable and massaging front seats
Premium microsuede headliner, visors and A- and B-pillar trim along with leather-wrapped A- and B-pillar handles
12-speaker Bose® Premium series with Centerpoint surround technology
Standard rear camera mirror, with full camera display
Standard 15-inch-diagonal multicolor head-up display
Standard power sunroof
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 2024 Sierra HD lineup is elevated with styling and design updates, inside and out. Inside, GMC designers set apart Sierra from the competition 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. Exterior highlights include:
Revised front bumper, fascia, grille designs and finishes on each trim
Animated lighting when approaching, starting, or when using the turn signals
New wheel designs on SLE, AT4, Denali and larger 18-inch polished aluminum wheels on dual rear-wheel models
New 22-inch accessory wheels
Six new exterior colors (extra cost): Titanium Rush Metallic, Sterling Metallic, Volcanic Red Tintcoat, Redwood Metallic, Meteorite Metallic and Downpour Metallic
Rear wheelhouse liners standard on Denali and Denali Ultimate dual rear-wheel models
The 2024 GMC Sierra HD will also offer the most trailering assistance technologies in the heavy-duty class through the available ProGrade Trailering System. The ProGrade Trailering System includes a suite of available intelligent trailering assistance technologies designed to help streamline the hitching and towing process, with integrated tools that help enhance customers’ feelings of safety, confidence and visibility including these new enhancements:
Available Enhanced, Industry First Transparent Trailer View for Gooseneck and Fifth Wheel Trailering: Allows the driver to virtually “see through” the trailer. Using the camera mounted on the rear of the truck and an accessory camera on the back of the trailer, it pieces together a view of the area behind the truck and trailer as if the trailer was not there, improving visibility. An enhanced version of this technology for model year 2024 enables compatibility with gooseneck and fifth-wheel trailers.
Available Trailer Side Blind Zone Alert: Extends side blind zone alerts to include the blind zone areas around the trailer.
New GCW Alert: This all-new feature warns the driver if the vehicle and trailer weight exceed the vehicle’s Gross Combined Weight Rating.
New, Available Adaptive Cruise Control with Trailering: Allows the Sierra HD’s available Adaptive Cruise Control to be used while trailering and to account for additional drag and increased braking distances when towing a trailer.
The centerpiece of Sierra’s high-tech interior cabin is the new available 13.4-inch-diagonal tablet-style touchscreen – the largest infotainment touchscreen in its class. 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 “split-screen” 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 CarPlay and Wireless Android Auto. 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
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