The main difference between the 2023 Sierra HD and 2024 Sierra HD is better tuned motors to allow for better driving and towing; however, other changes include a newer exterior, a luxurious interior, and better technology setup.
The 2024 Sierra HD comes with two motor options: a 6.6-liter V8 with 401 horsepower and 464 lb-ft of torque or a 6.6-liter turbocharged Duramax diesel V8 with 470 horsepower and 975 lb-ft of torque.
Both engines come with 10-speed transmissions for quicker acceleration, and they come standard in RWD, but you can get 4WD if you would like. The payload range is about 3,380–3,850 pounds while the towing range is about 14,500–20,000 pounds depending on your truck’s configuration.
With its advanced suspension system and improved trailering technology, the Sierra HD promises a confident and composed ride even when towing heavy loads, hauling heavy things, or off-roading.
With a newer exterior, the 2024 Sierra HD still retains the bold, muscular exterior that defines the GMC lineup. However, you’ll see a newer LED headlight design, taillight design, and turn signal design than the previous model.
With overall design, the range of available trims offers various styling cues that cater to diverse tastes. From the rugged off-road AT4X, which comes with stronger skid plates, steel bumpers, and 18-inch wheels, to the upscale Denali Ultimate, which epitomizes luxury chrome exterior trim, power running board with LED lights, and 20-inch wheels, you are sure to find a Sierra HD that matches your personality.
As for the interior, the Sierra HD impresses with its refined interior. Crafted with high-quality materials and attention to detail, the cabin offers a blend of functionality and comfort. You can get real fancy with the Denali Ultimate’s massaging front seats and microsuede headliner or the AT4’s Jet Black and Kalahari accents with perforated seats.
Overall, each Sierra HD trim should offer comfortable seating, ample legroom, and tons of storage compartments to cater to the needs of both driver and passengers.
The technology of the new Sierra HD comes with new available features like a 13.4-inch touchscreen, 12.3-inch digital gauge cluster, and 15.0-inch heads up display. You get an easy-to-use interface with Google software, Apple CarPlay, and Android Auto.
You can get plenty of USB ports, digital review camera, and a 12-speaker Bose sound system if you want. As for safety, you get features like automatic braking, trailer blind-spot monitoring, rear-cross traffic alert, lane-departure warning, and forward collision warning to give you more comfort and confidence on the road.