The 2026 GMC Sierra HD: Mammoth Power and Capability, Class-Leading Cabin Features and Cargo Volume, and a New Trim
Want a truck that can do it all? Buy the 2026 GMC Sierra HD. On one hand, it tows and hauls like a champ and boasts best-in-class HD cargo bed volume. On the other, it offers class-leading Crew Cab front head- and legroom and best-in-class 16-way power front seats with massage. Add in the arrival of the new 2026 GMC Sierra HD AT4X at Lunghamer Buick GMC, and this truck's greatness is clear.
Power and Performance
The 2026 GMC Sierra HD offers two powerful engines, each paired with a 10-speed automatic transmission. Standard on most trims is a 6.6-liter gasoline V8 engine rated at 401 horsepower and 464 lb-ft of torque. Optional for these trims and standard on the range-topping 2026 GMC Sierra HD Denali Ultimate is a Duramax® 6.6-liter Turbo-Diesel V8 that achieves 975 horsepower and 470 lb-ft of torque. This power plant comes with an exhaust brake for heightened control when towing.
For off-roaders at our Waterford, MI GMC dealership, the new 2026 GMC Sierra HD AT4X is a must. A partial list of its many rugged upgrades includes a factory-installed 1.5-inch suspension lift, 35-inch Goodyear® Territory MT tires, and a steel transfer-case skid plate.
Towing and Hauling
Max towing capability is 22,390lbs for the 2026 GMC Sierra HD 2500 and 36,000 lbs. for the 2026 GMC Sierra HD 3500. Also, every trim comes standard with a Trailering package, trailering mirrors, and a trailer brake controller - and all trims except the entry-level 2026 GMC Sierra HD Pro equip a Traction Select System with Tow/Haul mode.
Speaking of hauling, it's another forte of the 2026 GMC Sierra HD. Leveraging class-leading HD cargo bed volume, max payload is 4,049lbs for the GMC Sierra HD 2500 and 7,290lbs for the GMC Sierra HD 3500.
Infotainment
The latest infotainment amenities complement this GMC truck for sale. Aside from the entry-level model, every trim comes with a 12.3-inch color driver information display and a 13.4-inch touchscreen with an integrated navigation system. Satellite radio is standard too, and you'll have the convenience of 120V power outlets in the dash and bed.
Drive the 2026 GMC Sierra HD in Waterford, MI
Unparalleled power, capability, and technology make the 2026 GMC Sierra HD a must-see for truck lovers at Lunghamer Buick GMC. Before you stop in for a test drive, visit us online to prequalify for financing and learn how to trade in or "sell my car
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Lunghamer Buick GMC Inc.
5825 Highland Rd
Waterford, MI 48327
- Sales: (248) 599-1093
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