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The GMC Sierra HD combines the tried-and-true durability and capability of GM’s truck line with the everyday comforts that customers expect in a professional-grade automobile. There’s no better representation of that mission than the Denali Ultimate package. GMC has long been known as the premium truck builder, and the 2026 Sierra 2500 HD Denali Ultimate is bursting with premium content and high-tech wizardry. For 2026, 4WD is now standard on the SLE and SLT trim levels.
The Ram HD lineup was completely overhauled in 2025, offering greater capability and a more generous interior. With standard Cummins diesel power, the Ram is here to work, and its high-quality interior often punches above its price point without compromising on capability. 2026 brings new sport-truck variants, including the Black Express and Warlock trim packages. The Power Wagon is now available with a 6.7-liter Cummins Turbodiesel inline-6 engine.
The Ford F-Series is the company’s bread-and-butter truck, and while the F-150 is the most popular among them, the Super Duty lineup goes much deeper than everyday work trucks. Like GMC, Ford has been pushing the notion of premium trucks quite hard in recent years, and with the likes of Platinum, Limited, and King Ranch, there is no shortage of luxury in the F-250 lineup.
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| Specification | 2026 GMC Sierra 2500 HD | 2026 Ram 2500 | 2026 Ford F-250 Super Duty |
|---|---|---|---|
| Trims | Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate | Tradesman, Big Horn, Laramie, Rebel, Power Wagon, Limited Longhorn, Limited; Black Express and Warlock special editions | XL, XLT, Lariat, King Ranch, Platinum |
| Gas Engines | 6.6L V8 | 6.4L HEMI V8 | 6.8L V8; 7.3L V8 |
| Gas Horsepower | 401 hp | 405 hp | 405 hp; 430 hp |
| Gas Torque | 464 lb-ft | 429 lb-ft | 445 lb-ft; 485 lb-ft |
| Diesel Engines | 6.6L Duramax Turbo-Diesel V8 | High-Output 6.7L Cummins Turbo-Diesel I6 | 6.7L Power Stroke V8; High-Output 6.7L Power Stroke V8 |
| Diesel Horsepower | 470 hp | 430 hp | 475 hp; 500 hp |
| Diesel Torque | 975 lb-ft | 1,075 lb-ft | 1,050 lb-ft; 1,200 lb-ft |
| Transmission | Allison 10-speed automatic with either engine | TorqueFlite 8-speed automatic; TorqueFlite HD 8-speed with diesel | TorqShift 10-speed automatic |
| Drivetrain | 2WD or 4WD, depending on trim | 4×2 or 4×4, depending on trim | 4×2 or 4×4, depending on configuration |
| EPA Fuel Economy | Not EPA-rated | Not EPA-rated | Not EPA-rated |
| Maximum Conventional Towing—Gas | 16,000 lbs | 17,750 lbs | 18,200 lbs |
| Maximum Conventional Towing—Diesel | 20,000 lbs | 20,000 lbs | 22,000 lbs |
| Maximum Fifth-Wheel/Gooseneck Towing—Gas | 18,700 lbs | 17,750 lbs | 19,500 lbs |
| Maximum Fifth-Wheel/Gooseneck Towing—Diesel | 22,390 lbs | 20,000 lbs | 23,000 lbs |
| Bed Lengths | 6 ft 9 in; 8 ft | 6 ft 4 in; 8 ft | 6 ft 9 in; 8 ft |
| Bed Volume | 69.6 or 83.5 cu ft | 57.5 or 74.7 cu ft | 65.4 or 78.5 cu ft |
| Infotainment Screen | 7.0-inch standard; 13.4-inch on SLE and higher | 8.4-inch standard; available 12.0- and 14.5-inch screens | 8.0-inch standard; available 12.0-inch screen |
At Ewing Buick GMC, you will have an automotive experience unlike any other. You can find new GMC inventory, including the Terrain, Sierra, Yukon, Canyon, Sierra EV, and an unmatched collection of used car, truck, van, SUV, and crossover inventory at our dealership near you.
Are you interested in leasing or financing your 2026 GMC Sierra 2500 HD? The Finance Department at Ewing Buick GMC can help you find the right lease offer or finance solution that fits your budget. We cultivate relationships with many banks, lenders, and other financial organizations to provide you with great options in purchasing your new vehicle. In addition to the comprehensive factory warranty that comes with your new GMC Sierra 2500 HD, we offer extended warranty and protection programs to safeguard your investment.
Get the best deals and specials available to you on the GMC Sierra 2500 HD. Our knowledgeable sales staff wants to help you find the perfect fit in a new GMC or used car. We can’t wait to welcome you to the Ewing Buick GMC family and help you find your new car or used vehicle. Your support and customer service doesn’t stop after you sign your deal.
The expert Service Department at our GMC dealership near you is always ready to help with any repairs or maintenance you might need to keep your vehicle running perfectly. Our Express Service Lane will get you back on the road quickly when you need basic maintenance like an oil change or tire rotation.
Would you like to make your new car all your own with personalized upgrades? Our well-stocked Parts Department has all of the GMC authentic parts and accessories you need for the best customization of your vehicle. Make your car, truck, or SUV uniquely yours to fit perfectly in your lifestyle.
We are eager to help you on your car buying and vehicle ownership journey. Visit us today at Ewing Buick GMC!
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