2024 GMC Sierra 2500HD Ultimate: Price, Release Date & Specs

2024 GMC Sierra 2500HD Ultimate: Price, Release Date & SpecsThe reception to Chevrolet’s all-new 2020 Silverado HD was mixed. This is largely due to its polarizing exterior and uninspiring interior. GMC’s 2020 Sierra HD received far less criticism. It arrived with a much more attractive exterior, but the same lackluster interior and technology suite.

2024 GMC Sierra 2500HD Ultimate
2024 GMC Sierra 2500HD Ultimate

Chevrolet’s updated 2024 Silverado HD line was introduced to great fanfare last month. Fast forward four years. The Silverado HD finally had the exterior design that we all wanted, and an interior as good as the one on the original 2022 Silverado 1500. The only question was: what about Sierra? We were excited by the prospects of an upgraded interior, but we weren’t sure what would happen to the Sierra HD’s classy design.


GMC will add a Denali Ultimate top trim for the 2024 Sierra HD, following the addition of the Denali Ultimate to the 2022 Sierra HD and the Yukon 2023. Denali Ultimate is the ultimate in luxury, and the exterior color will be a major choice. Sierra Denali HD Ultimate is the most luxurious and advanced Sierra HD ever. It comes with an exclusive grille, as well as exterior badges in Vader dark chrome. A MultiPro reargate is included, along with a Kicker audio system, and power side steps. The exclusive Alpine Umber Denali Ultimate interior features full-grain Leather on all the seat surfaces, door panels, and console lids, as well as the grab handles on A and B pillars. On the instrument panel, you’ll find real wood accents and genuine open-pore Paldao trim. The speaker grilles, made of etched stainless steel and covering a Bose premium 12-speaker audio system featuring Centerpoint surround sound technology, are covered with etched stainless steel. The headline and visors, as well as the trim on A- and B pillars, are made of premium microsuede. Standard features include a rear-camera display and a 15-inch heads-up screen, as well as a power sunroof. The new 2024 GMC Sierra 2500HD Ultimate has impressed us.


Each trim gets its own front-end treatment. The majority of exterior improvements for the Sierra HD truck 2024 are focused on the grille and front bumper. Denali, Denali Ultimate and Duramax Diesel models receive an exclusive crossbar through the functional hood scoop. The Sierra HD’s rear is adorned with improved taillamps, despite the fact that the front of the vehicle received the most attention. The new lighting system also allows for animated lighting effects when turning on, off, or approaching the vehicle. SLE, AT4, Denali, and AT4 models get new wheels, with optional 22-inch wheel rolling stock. Dual-rear wheel models can also get involved with the new wheel options, which include a larger 18-inch version.

GMC’s ProGrade trailering system is available on the 2024 GMC Sierra HD. It extends beyond entertainment and safety to include towing. The system’s 14 camera views include Hitch View for hitch guidance, bed view zooming, bed-hitch guidance for gooseneck and fifth wheel trailers, and rear side with trailer length indication. GCW Alert is also new and uses data on acceleration to alert the driver when the trailer or truck exceeds the gross vehicle weight rating. GMC has enhanced its Transparent Trailer function for the 2024 Sierra HD, and it is compatible with fifth-wheel and gooseneck trailers. Transparent Trailer combines a camera at the rear of a truck with an accessory mounted on the trailer to stitch together the view as though the trailer was not present. This allows the driver to “see” through the trailer.

2024 GMC Sierra 2500HD Ultimate Interior
2024 GMC Sierra 2500HD Ultimate Interior


GMC Sierra HD’s interior and technological suite has lagged behind its exterior design and capabilities. This will all change in 2024. GMC’s designers have created unique and new interiors in the SLE, SLT, Denali, and Denali Ultimate trims. Interiors from the 2023 model continue to be carried over into the base Pro series Sierra HD.

Sierra HD features a 13.4-inch infotainment display, the biggest in its class. It runs Google Built-In and offers wireless Apple CarPlay, Android Auto, and Apple CarPlay connectivity. A 12.3-inch digital display and a 15-inch head-up color display are also available. Sierra HD has a combined total of more than 40 inches.

GMC will finally add adaptive cruise control for the Sierra HD in 2024. It also works when towing a trailer. Standard safety features include Intellibeam auto high beams and Intellibeam forward collision warning. The Pro Safety Plus package offers rear cross-traffic braking, trailer blind zone warning, and auto emergency braking.


The 2024 GMC Sierra HD 6.6-liter Duramax Diesel engine is ready for work with its 470 horsepower and 975 pounds-feet of torque. This represents an increase in power of 25 hp, 65 lb.-ft., as well as a more efficient turbocharger. It also received new pistons that have redesigned bowls and new fuel injectors. The result was not only an increase in overall power but also torque across all rpms. Most of this improvement is found at the lower half of the curve. This means that heavy-duty vehicles will accelerate better. A more powerful turbo vane actuator, as well as upgraded engine valve springs, have improved the Duramax Diesel’s engine braking.

The Allison 10-speed transmission was introduced in 2020 for the Duramax Diesel engine. In 2024 the same transmission will be used to power GMC’s gasoline V-8 engine with a 6.6-liter capacity. The Allison gearbox allows smaller steps between ratios. This will allow the gasoline engine to stay closer to peak performance (401 horsepower and 464lb-ft). This will give you a greater sense of confidence behind the wheel whether towing or driving empty. We are excited about this pickup after experiencing the improvement in driving that can be provided by adding additional gears.

It’s not known how the sales of 3/4 ton and 1-ton models are split, but the general consensus is that the ratio is somewhere between 75 to 25 percent, the 3/4 ton trucks being the most popular. GMC increased Sierra HD towing capacity for the 2024 model, in an unexpected place. Sierra 2500HD crew cab’s towing capability increases from a class-leading 21,900 pounds to an even higher 22,500 pounds when equipped with the optional Max Tow Package. GMC’s Max Tow package, which is available for the Sierra 2500 HD crew cab, increases the towing capacity of this pickup from 21,900 pounds, the best-in-class, to 22,500 pounds, and even further, up to 222,500 pounds. This not only targets the paper but also the core market. All Sierra 3500 HD Dual-Rear Wheel Pickups are rated for towing more than 30,000 lbs.

2024 GMC Sierra 2500HD Ultimate Design
2024 GMC Sierra 2500HD Ultimate Design

Pricing and Release Date

Production of the 2024 GMC Sierra HD 2500Hn is expected to begin this fall. The 2024 GMC Sierra HD comes in six trim levels. Pro (starting MSRP $45,000), SLE ($50,000), SLT ($60,000), AT4 (68,000 MSRP), Denali (74,000 MSRP), and Denali Ultimate (80% starting MSRP).