The 2026 GMC Sierra HD Truck is ready to help you take on whatever lies ahead with a diesel V8 engine, serious towing power, advanced trailering tech, and more.

The Sierra 3500 Heavy Duty pickup truck offers Crew Cab models with either a 6' 9" standard bed or an available 8' long bed. Long bed is available with a Single Rear Wheel or Dual Rear …

Explore the 2026 GMC Sierra HD AT4 and AT4X off-road work truck equipped with off-road suspension with twin-tube shocks, prograde trailering tech, and more.

Discover the 2026 GMC Sierra 2500 HD & 3500 HD Denali and Denali Ultimate luxury trucks with a bold grille, premium interior, and a 13.4 inch infotainment system.

The 2025 GMC Sierra HD work truck pulls your world with turbocharged power and an impressive lineup of trims. View information about specs and features.

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Choose either a 2026 GMC Sierra 2500 HD or 3500 HD and learn more about the vehicle specs, trims, and features available.

Choose either a 2026 GMC Sierra 2500 HD or 3500 HD, and begin building your own personalized heavy duty pickup truck.

Our Vehicle Selector will help you locate your next 2026 GMC Sierra 2500 HD pickup truck and 3500 HD.

The 2026 Sierra HD Chassis Cab work truck offers up to 470 HP, a 6.6L V8 engine, exhaust brakes to improve control when towing, electronic stability, and more.