Buy a New 2026 GMC Sierra 2500 HD Online

GMC Sierra 2500 HD

Explore the 2026 GMC Sierra 2500 HD at Vernon GMC

The 2026 GMC Sierra 2500 HD delivers the professional-grade capability drivers expect from a heavy-duty pickup while offering premium comfort and advanced technology. At Vernon GMC, we make it easy to shop online with best-price-forward pricing that eliminates the need for negotiations. Whether you're located in West Texas, the DFW Metroplex, or almost anywhere else in the United States, our team can help coordinate delivery directly to your location. Learn more below.

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Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

1Dealer Discount applied to everyone

Purchase a GMC Sierra 2500 HD Online

GMC Sierra 2500 HD

At Vernon GMC, purchasing your next heavy-duty truck is simple and convenient. Our Buy Online experience lets you browse available Sierra 2500 HD models, estimate payments, and start your purchase. We believe in transparent pricing, which is why we put our best price forward instead of requiring negotiations. Whether you live in Oklahoma, New Mexico, Arkansas, Louisiana, or another state, our team can help arrange delivery almost anywhere in the United States. Explore the 2026 GMC Sierra 2500 HD today and discover how easy it is to shop online with Vernon GMC.

Explore the 2026 Sierra 2500 HD Trim Levels

Sierra Pro

  • 6.6L 8-cylinder engine with 401 horsepower / 464 lb-ft of torque or 6.6L 8-cylinder Duramax turbo-diesel engine with 470 horsepower / 975 lb-ft of torque
  • 10-speed automatic transmission
  • Rear-wheel drive (RWD) or 4-wheel drive (4WD)
  • 17-inch steel painted Silver wheels
  • Trailering Package
  • Automatic locking rear differential
  • Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
GMC Sierra Pro
  • 6.6L 8-cylinder engine with 401 horsepower / 464 lb-ft of torque or 6.6L 8-cylinder Duramax turbo-diesel engine with 470 horsepower / 975 lb-ft of torque
  • 10-speed automatic transmission
  • 4-wheel drive (4WD)
  • 17-inch machined aluminum wheels
  • Black outside power-adjustable vertical trailering mirrors
  • LED tail lamps
  • Available In-Vehicle Trailering App
GMC Sierra SLE
  • 6.6L 8-cylinder engine with 401 horsepower / 464 lb-ft of torque or 6.6L 8-cylinder Duramax turbo-diesel engine with 470 horsepower / 975 lb-ft of torque
  • 10-speed automatic transmission
  • 4-wheel drive (4WD)
  • 18-inch machined aluminum wheels with Dark Grey metallic accents
  • 12.3" diagonal color Driver Information Center
  • 13.4" diagonal GMC Premium Infotainment System with Google built-in
  • Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
GMC Sierra SLT
  • 6.6L 8-cylinder engine with 401 horsepower / 464 lb-ft of torque or 6.6L 8-cylinder Duramax turbo-diesel engine with 470 horsepower / 975 lb-ft of torque
  • 10-speed automatic transmission
  • 4-wheel drive (4WD)
  • 20-inch high gloss Black aluminum wheels
  • Off-Road suspension
  • Hill Descent Control
  • Underbody skid plates
GMC Sierra AT4
  • 6.6L 8-cylinder engine with 401 horsepower / 464 lb-ft of torque or 6.6L 8-cylinder Duramax turbo-diesel engine with 470 horsepower / 975 lb-ft of torque
  • 10-speed automatic transmission
  • 4-wheel drive (4WD)
  • 20-inch Ultra Bright machined aluminum wheels with bright chrome inserts
  • Heated driver and front outboard passenger seats
  • Ventilated driver and front passenger seats
  • Bose® Premium Sound System
GMC Sierra Denali
  • 6.6L 8-cylinder engine with 401 horsepower / 464 lb-ft of torque or 6.6L 8-cylinder Duramax turbo-diesel engine with 470 horsepower / 975 lb-ft of torque
  • 10-speed automatic transmission
  • 4-wheel drive (4WD)
  • 18-inch machined aluminum wheel with High Gloss Black accents
  • Off-Road suspension with 1.5" factory-installed lift and Multimatic DSSV dampers
  • Black power-retractable assist steps with LED perimeter lighting
  • Available AT4X AEV® Edition
GMC Sierra ATX
  • 6.6L 8-cylinder Duramax turbo-diesel engine with 470 horsepower / 975 lb-ft of torque
  • 10-speed automatic transmission
  • 4-wheel drive (4WD)
  • 20-inch Ultra Bright machined aluminum wheels with gloss Black inserts
  • Power-retractable assist steps with LED perimeter lighting
  • Technology Package
  • Bose Premium Series with 12-speaker system with CenterPoint
GMC Sierra Denali Ultimate

Exterior Design

The 2026 Sierra 2500 HD features bold styling with a signature GMC grille and distinctive LED lighting. Multiple cab configurations, bed lengths, and appearance packages make it easy to choose a truck that matches your needs. Features such as the MultiPro Tailgate provide additional flexibility when loading cargo or accessing the truck bed.

Interior Design

Inside, the Sierra 2500 HD offers a refined cabin that combines durable materials with premium comfort. Enjoy perks like:

  • Leather-appointed seating
  • Heated and ventilated front seats
  • Dual-zone automatic climate control
  • Spacious Crew Cab accommodations

Performance

The Sierra 2500 HD offers two capable engine options. The standard 6.6-liter V8 gasoline engine produces 401 horsepower and 464 pound-feet of torque, while the available 6.6-liter Duramax Turbo-Diesel V8 delivers 470 horsepower and 975 pound-feet of torque.

Both engines are paired with an Allison 10-speed automatic transmission. When properly equipped, the Sierra 2500 HD can tow up to 22,070 pounds. Optional four-wheel drive and advanced trailering technologies help provide additional confidence whether you're working across West Texas or towing a camper on vacation.

Technology

The 2026 Sierra 2500 HD offers technology designed to simplify work and everyday driving.

  • 13.4-inch touchscreen infotainment system
  • 12.3-inch configurable digital driver information center
  • Wireless Apple CarPlay®
  • Wireless Android Auto
  • Google built-in compatibility
  • Multiple USB charging ports
  • Trailer camera views

Safety

Available driver-assistance technologies help increase confidence behind the wheel. Depending on trim level and equipment, the Sierra 2500 HD may include:

  • Forward Collision Alert
  • Automatic Emergency Braking
  • Lane Departure Warning
  • Blind Zone Steering Assist with Trailering
  • Rear Cross Traffic Braking
  • Rear Park Assist
  • Adaptive Cruise Control

Buy a Sierra 2500 HD Online

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