The GMC Sierra has regularly been one of the top-selling trucks on the market for many years and with good reason. The Sierra 1500 is a gorgeous truck with lots of high-end, classy content for those who want a durable pickup that is loaded with luxury comfort and convenience features from top to bottom. But what about the larger and more rugged GMC Sierra HD lineup of trucks? Specifically, the Sierra 2500 HD and Sierra 3500 HD? How do they measure up for the 2025 model year when it comes to features, content, comfort, and improvements? Well, there is a lot to entice shoppers scouring our inventory here at Crossroads Chevrolet GMC, your GMC dealer, for a heavy-duty model thanks to upgrades to current trims and a robust set of features. Let’s quickly dive into the top eight features of the 2025 GMC Sierra HD so you know exactly what’s worth shopping for and why.

#1 – Heavy-Duty Powertrains

The 2025 GMC Sierra HD models come with two different powertrain options in the form of a 6.6-liter gas-powered V8 that makes 401 hp and 464 lb-ft of torque and a 6.6-liter Duramax turbo-diesel V8 that generates 470 hp and 975 lb-ft of torque. Both of the powertrains come standard with a 10-speed automatic transmission and are available in rear-wheel drive or four-wheel drive, giving the Sierra HD a lot of versatility in terms of how it can be configured for the tasks at hand. Combined with the high towing and payload capabilities, the durable and very performant engines for the 2025 Sierra HD make it more than capable of work and play. They’re easily the heart of the Sierra HD’s performance and make it possible for these trucks to achieve the feats that they do.

#2 – Adaptive Cruise Control With Trailering

Adaptive Cruise Control with Trailering is an excellent feature that is available for a wide range of different GMC Sierra HD trims. In fact, it is available for every single trim, from the Pro all the way up to the Denali Ultimate. However, the added bonus is that Adaptive Cruise Control with Trailering is standard across the AT4, AT4X, Denali, and Denali Ultimate trims for the 2025 model year. So, no matter what trim you go with, it’s either an available feature or a standard feature for the Sierra HD. This can help you relax on the road. And with trailering assist, it means you can let the GMC Sierra HD do a lot of the heavy lifting for you during those long commutes across the highway or when you’re making your way across lengthy stretches of road with a trailer in tow. It’s easily one of the best features of the 2025 GMC Sierra HD.

#3 – Denali Ultimate Trim

When you need to transport in style, there is no better heavy-duty luxury truck on the market to get you safely to your destination while pampering you with lots of lavish comfort features than the Denali trims. The Denali Ultimate, in particular, lives up to its name as the ultimate combination of luxury and utility for the Sierra 2500 HD and Sierra 3500 HD. The Denali Ultimate takes the prowess and capabilities of the Sierra HD and elevates it with a signature Vader Chrome grille and exclusive 20-inch ultra-bright machined aluminum wheels with gloss-black inserts. It also comes with an exclusive interior featuring Alpine Umber coloring, full-grain leather seating, and authentic open-pore Paldao wood detailing. You also have 16-way power seats with massage capabilities. The Denali Ultimate is topped off with a 12-speaker Bose Premium Series surround sound system, making it one of the most well-rounded and feature-rich luxury pickups on the market.

#4 – AT4X Trim

The GMC Sierra HD isn’t just known for its luxury; it’s also known for having very capable off-road options, with the top-of-the-line off-road option being the AT4X trim, which is a grade above the AT4 off-road trim. The AT4X comes with a factory-installed 1.5-inch suspension lift and Multimatic DSSV dampers for an incredibly controlled ride. You also have a rear electronic-locking differential for added traction. The AT4X comes equipped with 35-inch Goodyear Territory mud-terrain tires for maximum grip while still lavishing drivers with some of the features from the Denali, such as an Obsidian Rush interior with full-grain leather upholstery and 16-way power massage seats. It’s the ultimate heavy-duty, off-road, luxury pickup truck, and only the GMC Sierra HD can provide you with that kind of segment-defining experience.

#5 – MultiPro Tailgate

With the consistent evolution of pickup truck tailgates, one tailgate design absolutely stands out above the rest, and it’s the GMC Sierra’s MultiPro Tailgate. This multi-purpose and multi-functional tailgate isn’t just a popular choice for fans of the GMC Sierra 1500; it’s also available for the GMC Sierra HD models, giving Sierra 2500 HD and Sierra 3500 HD shoppers a lot to look forward to in terms of tailgate functionality. The MultiPro Tailgate has multiple functions, including two load stops, a bed step, and a raised work surface. All of these features are in addition to standard tailgate functionality, making the bed of the 2025 Sierra HD a lot more accessible and efficient.

#6 – Trailering Capacity

Let’s not forget that a big reason for opting for GMC Sierra HD is for the heavy-duty utility, and both the Sierra 2500 HD and Sierra 3500 HD provide plenty of trailering capacity for the 2025 model year. You get substantially improved trailering capabilities with the Sierra HD over the light-duty Sierra 1500. For the Sierra 2500 HD, you have up to 22,500 lbs worth of towing capacity when it’s properly equipped. For the Sierra 3500 HD, you have up to 36,000 lbs worth of trailering capacity, giving you a lot of leeway in what you trailer and how you trailer it, from vehicles and campers to boats and livestock. You have some serious heavy-duty capabilities with the towing performance of the 2025 GMC Sierra HD, especially when equipped with the Max Trailering Package, which features heavy-duty shocks, upgraded springs, and provisions for gooseneck or fifth wheel trailering.

#7 – Payload Capacity

There are expectations to be met when it comes to payload ratings for heavy-duty models, and the 2025 GMC Sierra 2500 HD and Sierra 3500 HD do not disappoint in this area. In fact, both variants offer some impressive payload capacity right out of the gate thanks to the durable chassis design and highly capable powertrain options. The 2025 Sierra 2500 HD is capable of delivering a max payload of 3,850 lbs, whereas the 2025 Sierra 3500 HD has a max payload capacity of 7,290 lbs. If you need to haul well over a ton of cargo, the Sierra 2500 HD can get the job done comfortably with room to spare. However, if you need to haul several tons worth of cargo, the Sierra 3500 HD is ready for the job at hand, giving you the capacity and the durability to handle the load.

#8 – Infotainment Suite

One standout feature of the 2025 GMC Sierra HD is its massive amount of screen real estate in the cabin. You have a hefty 13.4-inch HD touchscreen available for the Sierra HD models, providing you with plenty of space to view navigation information, vehicle health, and your favorite media and apps, thanks to features like integrated wireless Apple CarPlay and Android Auto. There is also an accompanying 12.3-inch digital information center with customizable screens and telemetry, making it easy to keep vital information about the truck right in front of you. If you would rather stay focused on the road ahead without looking down, the available 15-inch heads-up display will make sure you stay focused on what’s ahead while staying informed. When these features are combined with OnStar Connected Services, Google Built-In, and Wi-Fi connectivity, you can easily see why the 2025 GMC Sierra HD is a robust tech haven for heavy-duty truckers.

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