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2026 GMC Sierra 3500HD | Cummins GMC

2026 GMC Sierra 3500HD

*MSRP Starting at $75,000

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TOP FEATURES

AVAILABLE TOW UP TO
30,800 LBS.1

AVAILABLE
DURAMAX® 6.6L TURBO-DIESEL V8 ENGINE
WITH 975 LB.-FT. OF TORQUE AND 470 HP

WORLD'S FIRST
SIX-FUNCTION MULTIPRO™ TAILGATE
WITH AVAILABLE KICKER® AUDIO SYSTEM2

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2026 GMC Sierra 3500HD

Overview of the 2026 GMC Sierra 3500 HD

When you're looking for an awe-inspiring classic American one-ton truck, head to Cummins GMC to discover the incredible 2026 GMC Sierra 3500 HD on our forecourt now! The 3500 is the biggest in the 1500, 2500, and 3500 lineup, and it's a true beast, with exceptional power, capability, and build quality. There's also a very impressive tech stack, and a choice of either a 6.6-liter V8 gas engine or a 6.6-liter turbo Duramax diesel engine, with ten-speed Allison transmission to provide 470hp and a whopping 975-lt of torque. Even the toughest loads are handled with ease, thanks to 20,000 lbs of towing for even the toughest loads, optimized thanks to the MultiPro tailgate and other load management features.

Technology highlights

The 2026 GMC Sierra 3500HD offers up to 3,945lbs of payload for a power-packed ride that still manages to feel responsive. It's also loaded with exceptional driver safety and assistance features, handling everything from automatic emergency braking to difficult snowy roads thanks to the exciting new Snow Plow feature. Check out adaptive cruise control and the range of luxurious extras in the higher trims, such as the available head-up display.

2026 GMC Sierra 3500HD

2026 GMC Sierra 3500HD Trim Levels

2026 GMC Sierra 3500HD Denali

*Starting at $75,000
2026 GMC Sierra 3500HD Denali

2026 GMC Sierra 3500HD Denali Ultimate

*Starting at $93,800
2026 GMC Sierra 3500HD Denali Ultimate
2026 GMC Sierra 3500HD

Design and Styling

The GMC Sierra 3500HD has been refreshed for 2026 with new daytime running lights, bright and pixel-perfect LEDs, and a smart spray-on bedliner. This truck offers notable levels of customization, with the chance to customize your bed steps, badging, power outlets, paint finishes, tie downs, wheels and more. We love the luxury-led Denali, but every model in this incredible new range is a winner!

Awards and Accolades

The 2026 GMC Sierra 3500HD has always done brilliantly at the auto awards, and for years, it's held a lead place for residual value in the trucks category. In 2025, it won the North American car of the year, too! Why not head to Cummins GMC to book your test drive and discover its legendary power and capability for yourself?

2026 GMC Sierra 3500HD
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2026 GMC Sierra 3500HD

Shop the 2026 GMC Sierra 3500HD Today!

The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Dealer sets final price. Click here to see all GMC vehicles' destination freight charges.

  1. Requires a 3500 HD Denali Crew Cab DRW model with available Duramax 6.6L Turbo-Diesel V8 engine, Gooseneck/Fifth Wheel Prep package and gooseneck/fifth-wheel hitch. Maximum trailering ratings are intended for comparison purposes only. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner's Manual. The trailering capacity of your specific vehicle may vary. The weight of passengers, cargo and options or accessories may reduce the amount you can trailer.
  2. Non-GM warranty. Limited warranty by KICKER®, 3 years/36,000 miles, whichever comes first. For more information, contact your dealer.