The 2024 GMC Sierra HD Combines Luxury And Muscle

For the 2024 model year, the GMC Sierra 2500HD and 3500HD heavy duties will receive a makeover that includes a new transmission, a redesigned front end, and a better interior. Customers of HD trucks will have the luxury of more options thanks to the addition of two trim levels, one for off-road excursions and the other for a cozier work-truck experience.

Greater Capabilities

By implementing improvements to the 2024 Sierra 2500HD and 3500HD, GMC contributes to the arms race in heavy-duty vehicle energy figures. However, the 6.6-liter V-8 engine’s energy output remains the same for 2024; the powerful V-8 continues to produce 401 horsepower with 464 pound-feet of torque.

What has changed is that GMC has replaced the six-speed computerized transmission with a 10-speed digital transmission that is shared with the diesel. According to GMC, the new transmission better matches the engine’s energy curve. The 6.6-liter Duramax V-8 diesel engine has a power output of 470 hp and can create 975 lb-ft of torque, which is extremely close to 1000 lb-ft. On the previous model, the numbers were 445 hp and 910 pound-feet.

GMC claims the increased power (and efficiency) result from numerous engine upgrades, including a more environmentally friendly turbocharger that helps provide 25% more low-end torque than the current-generation vehicle. The 2500HD and 3500HD can tow up to 22,500 and 36,000 kg, respectively. If you choose the 2500HD crew-cab model, you give up 600 kilograms of towing capacity, lowering the maximum weight to 21,900 kilograms.

More Style and Luxury

The 2024 GMC Sierra HD lineup features new wheels on most trim levels, active lighting when arriving and starting the car, six additional body colors, including Volcanic Red Tintcoat, and numerous front-end aesthetic updates, including the grille. New finishes, hues, and stitching patterns are added to the cabin for a more upscale appearance and feel.

With its distinctive front fascia, 20-inch wheels, GMC badging in Vader chrome, MultiPro tailgate with an integrated Kicker audio system, and power assist steps as standard, the brand-new Sierra HD Denali Ultimate elevates the bar for beauty and luxury. However, the inside, which features an Alpine Umber finish, full-grain leather appointments, and open-pore Paldao wood, is even more striking.

The package includes brand-new front seats with 16-way power adjustments and massaging functions, a premium microsuede headliner, visors, A- and B-pillar trim, and a Bose Premium series 12-speaker sound system with etched stainless-steel speaker grilles. Following the improvements to the standard Sierra for 2022, the technology has also significantly advanced.

Check out the 12.3-inch digital instrument cluster that is optional, as well as the 13.4-inch center touchscreen with a “split-screen” view. An additional 15-inch color head-up display is in front of the driver. The infotainment system in the Sierra HD has Google built-in (except for the Pro trim), and it works with both Apple CarPlay and Android Auto.

However, the AT4X is something to expect; the Sierra HD variant with off-road aspirations won’t be available until later in 2024. GMC doesn’t plan to announce prices until closer to the anticipated debut dates, although current Sierra 2500HD cars start at roughly $40,000, with Denali versions over $70,000. The Denali Ultimate is anticipated to soar far over that figure.