Performance and Capability That Commands Respect

Beneath the bold hood of the 2026 GMC Sierra 2500 HD lies the heart of a workhorse. The available 6.6-liter, Duramax Turbo-Diesel eight-cylinder engine unleashes a remarkable 470 horsepower paired with a ground-shaking 975 pound-feet of torque-numbers that translate into real-world pulling power when it matters most. Those who favor gasoline will find the 6.6-liter, eight-cylinder equally impressive, generating 401 horsepower and 464 pound-feet of torque for responsive acceleration under load.

Every ounce of power flows through an intelligent 10-speed automatic transmission engineered to find the right gear at precisely the right moment. Contractors working near Paia will appreciate the choice between rear-wheel drive for efficiency and four-wheel drive for tackling unpredictable conditions. The standard Trailer Package simplifies heavy hauling with an integrated trailer hitch, dual connectors, and intuitive Hitch Guidance technology. For those requiring maximum capability, the Max Trailer Package delivers enhanced frame components and Gooseneck/5th Wheel Prep provisions.

Interior Design and Features Built for Real Life

Open the door and discover a workspace that refuses to compromise on comfort.

The Sierra 2500 HD welcomes up to six passengers into a cabin where thoughtful design meets practical durability. Business owners throughout Waihee-Waiehu will find seating configurations ranging from hardworking vinyl in the Pro trim to sumptuous Full Grain Leather that graces the Denali Ultimate.

Spend long hours behind the wheel? Higher trims come with heated and ventilated front seats that adapt to island weather. The Denali Ultimate takes relaxation further with 16-way power adjustment, lumbar support, and massage functions that ease tension after demanding hauls. The revolutionary GMC MultiPro Tailgate transforms with six distinct positions, turning loading duties into simple tasks. Meanwhile, the available Up-level Rear Seat Storage Package maximizes every cubic inch with clever seatback compartments and a fold-out armrest complete with cupholders.

Technology That Works as Hard as You Do

The 2026 Sierra 2500 HD integrates sophisticated technology designed to simplify complex tasks. Residents of Makawao will discover features that anticipate their needs:

• Premium GMC Infotainment System - Google built-in apps deliver navigation and voice assistance, while wireless Apple CarPlay and Android Auto keep you connected without cables
• HD Surround Vision - Multiple cameras create a bird's-eye perspective of your surroundings, transforming tight parking situations into manageable maneuvers
• Multicolor Head-Up Display - Critical information projects directly onto the windshield, allowing your focus to remain where it belongs
• In-Vehicle Trailering App - Comprehensive trailer management includes checklists, maintenance tracking, security monitoring, and tire pressure alerts.

Standard Sierra HD Pro Safety technology brings Forward Collision Alert, Automatic Emergency Braking, and Lane Departure Warning to every model.

Seven Distinct Trim Levels

Pro: Purpose-built functionality featuring a 7-inch infotainment display, vinyl seating, 17-inch painted steel wheels, and rubberized-vinyl floors ready for muddy boots.

SLE: Elevated daily driving with the Premium Infotainment System, cloth upholstery, machined aluminum wheels, and convenient Keyless Open-and-Start.

SLT: Refined touches including perforated leather-appointed seats, heated front seating, warming steering wheel, LED fog lamps, and Digital Variable Steering Assist.

AT4: Adventure-ready equipment featuring Rancho shocks, protective skid plates, Hill Descent Control, Bose premium audio, and striking 20-inch High Gloss black wheels.

AT4X: Extreme capability with aggressive 35-inch mud-terrain tires, power retractable steps, locking rear differential, and 16-way massaging front seats.

Denali: Sophisticated luxury appointments with Forge Perforated Leather, 12-way power seating, polished chrome steps, and 20-inch Ultra-bright machined wheels.

Denali Ultimate: Uncompromising refinement featuring Full Grain Leather, massaging seats, Bose Premium 12-speaker audio, and illuminated power-retractable steps.