2026 GMC Sierra 3500 HD in Chapmanville, WV

Meet the Muscle: 2026 GMC Sierra 3500 HD at Thornhill GM Superstore in Chapmanville, WV

When you need maximum trailering, advanced driver assistance, and high-end comfort all in one heavy-duty package, the 2026 GMC Sierra 3500 HD delivers. Available now at Thornhill GM Superstore in Chapmanville, WV, the Sierra 3500 HD brings the kind of hauling power, refinement, and durability that’s built for long days and big loads.

Offered in six trims – Pro, SLE, SLT, AT4, Denali, and Denali Ultimate – this HD truck stands toe-to-toe with every other vehicle in its class. Whether you're pulling a work trailer or outfitting your rig for luxury road trips, there's a Sierra 3500 HD for every job and every lifestyle.

Available exterior colors include Summit White, Coastal Dune, Downpour, Cardinal Red, Onyx Black, and Sterling Metallic. Multiple cab configurations and dual-rear-wheel setups give you even more control over capability.

Trim Breakdown: From Pro to Denali Ultimate

• Pro: Standard gas V8, 7-inch touchscreen, vinyl seats, manual A/C, and 17-inch steel wheels. Tough and ready.
• SLE: Adds a 13.4-inch infotainment system, chrome bumpers, keyless entry, and cloth seating with USB-C ports.
• SLT: Leather-appointed seating, digital gauge cluster, trailer tire pressure monitoring, power-folding mirrors, and 10-way power front seats.
• AT4: Off-road tuned suspension, skid plates, black wheels, vertical recovery hooks, and all-terrain tires. Built for backroads.
• Denali: Full-grain leather seating, premium Bose® audio, chrome exterior accents, wood trim, and enhanced trailering tech.
• Denali Ultimate: Top-tier luxury with massaging seats, 15-inch head-up display, Super Cruise® availability, power sunroof, and microsuede headliner.

Inside the Cabin: Comfort Meets Command

Inside the Sierra 3500 HD, the design focuses on maximizing comfort and utility. Crew Cab configurations offer up to 44.53 inches of front legroom, while even the Regular Cab layout gives you 43.1 inches of stretch space up front. Soft-touch materials, ergonomic layouts, and premium seat trims are standard across the upper trims, with Denali and Denali Ultimate boasting full-grain leather seating, microsuede headliners, and real wood accents.

Comfort and convenience features include:

• Heated and ventilated front seats with 10-way power and lumbar
• Heated rear outboard seats and dual-zone automatic climate control
• Rear air vents, wireless charging, and USB ports
• Fold-flat rear bench seats with under-seat storage
• Overhead console with sunglasses holder and integrated lighting

The Sierra 3500 HD also features large door pockets, upper glove boxes, and lockable storage compartments for keeping gear secure. On Denali Ultimate models, a rear camera mirror and power sliding rear window are included.

Exterior Built for Work and Style

Function drives the Sierra 3500 HD's design, but it's far from utilitarian. The Denali and Denali Ultimate trims bring chrome grille surrounds and 20-inch Ultra-Bright machined wheels, while the AT4 features blacked-out trim, red recovery hooks, and 18-inch all-terrain tires with gloss-black aluminum wheels.

Every trim is engineered for performance with details that include:

• MultiPro tailgate with six configurations
• Power-adjustable trailering mirrors with memory, heat, and auto-dimming
• Standard spray-on bedliner with GMC logo
• LED cargo bed lighting and cab-mounted lamps
• Available cab marker lamps and high-visibility step bars

Whether you’re loading up for the worksite or prepping for a weekend tow, the Sierra 3500 HD’s bed is ready with 12 cargo tie-downs, upper bed stake pockets, and a 120-volt outlet.

Performance: Diesel or Gas, this Powertrain Doesn’t Flinch

Under the hood, the Sierra 3500 HD offers two heavy-duty engines paired with a 10-speed Allison® automatic transmission. The available 6.6-liter Duramax® turbo-diesel V8 makes 470 horsepower and a massive 975 lb-ft of torque, giving you the strength to haul up to 36,000 pounds when properly equipped.

Powertrain and drivetrain options include:

• 6.6-liter V8 gas engine with 401 horsepower and 464 lb-ft of torque
• 6.6-liter Duramax turbo-diesel V8 with 470 horsepower and 975 lb-ft of torque
• Allison 10-speed automatic transmission (standard on all trims)
• Dual-rear-wheel availability on select configurations
• Available Autotrac 2-speed transfer case and electronic shift-on-the-fly 4WD

Both engines are compatible with trailer brake requirements, and models include a pin trailer harness connector and integrated trailer brake controller. Denali Ultimate adds digital variable steering assist for confident highway handling under load.

Tech that Works Smarter and Harder

Every 2026 Sierra 3500 HD is a mobile command center with digital displays and real-time trailering support. Starting with a 7-inch color touchscreen on the Pro and scaling to a 13.4-inch center display and 12.3-inch digital gauge cluster on SLT and above, this heavy-duty truck is future-ready.

Technology features include:

• 13.4-inch GMC Premium Infotainment System with Google built-in
• 12.3-inch digital driver information display
• Available 15-inch Head-Up Display
• Wireless Apple CarPlay® and Android Auto™
• Trailer Camera Views with Transparent Trailer View
• Vehicle Trailering App with compatible trailer profiles
• Integrated trailer brake controller and trailer tire pressure monitoring
• Wi-Fi® hotspot capability and Bose® Premium Audio (SLT and higher)
• Rear camera mirror and HD Surround Vision

Denali Ultimate also includes an available Super Cruise® driver assistance system for hands-free towing on compatible highways.

Built-In Confidence: Safety and Driver Assistance

Safety is built into every inch of the 2026 Sierra 3500 HD. GMC Pro Safety comes standard with automatic emergency braking and lane departure warning, while advanced features like rear cross-traffic braking and trailer side blind zone alert expand your field of awareness when trailering.

Standard and available safety equipment includes:

• Forward collision alert and automatic emergency braking
• Lane departure warning with lane keep assist
• Front and rear park assist with rear pedestrian alert
• Rear camera mirror and rear seat reminder
• Blind zone steering assist and trailer side blind zone alert
• Safety alert seat and adaptive cruise control
• Transparent trailer view and trailer sway control
• OnStar® with 5G Wi-Fi hotspot

Seven airbags, StabiliTrak with electronic trailer sway control, and LED lighting systems add visibility and control in every scenario.

Test the 2026 Sierra 3500 HD at Thornhill GM Superstore in Chapmanville, WV

From the daily grind to serious hauls, the 2026 GMC Sierra 3500 HD doesn’t back down. Whether you’re looking at diesel V8 strength, detailed interior specs, or high-end trim options, this truck delivers everything you need to get the job done and look good doing it.

Thornhill GM Superstore in Chapmanville, WV, has the 2026 GMC Sierra 3500 HD ready for you to experience. Compare trims, review drivetrain and trailer features, and see why this heavy-duty truck remains a favorite over other vehicles like the GMC Canyon or Chevrolet Silverado HD. Schedule your test drive today.

*Disclaimer: This content was drafted with AI assistance for initial drafting, reviewed by a subject-matter expert for accuracy, and edited by our team of writers and editors.