2026 GMC Sierra 3500HD Overview
The 2026 GMC Sierra 3500HD is now available at Twins Buick GMC, so come on down to discover this classic one-ton truck for yourself! It’s packed with power, high-end build quality and cutting-edge safety and drive optimization technologies to handle every need.
Pick from a 6.6-liter V8 gas engine or a 6.6-liter turbo Duramax diesel engine, both of which are paired with a ten-speed Allison transmission for 470hp and a whopping 975 lb-ft of torque. Benefit from up to 20,000 lbs of towing for even the toughest loads, supported with a MultiPro tailgate and adaptive cruise control.
Technology Highlights
The 2026 GMC Sierra 3500HD provides up to 3,945 lbs of payload for a responsive, power-packed ride, with an exceptional range of driver assistance and safety features to handle everything from blind spot assistance to emergency braking.
There’s even an innovative Snow Plow feature to handle those winter roads, and convenient adaptive cruise control. Higher trims have a range of luxurious extras available, such as an optional head-up display.
- Adaptive cruise control standard
- Blind spot assistance & automatic emergency braking
- Innovative Snow Plow preparedness feature
- Available head-up display (higher trims)
- MultiPro tailgate for versatile bed access
- Ten-speed Allison automatic transmission
Design and Styling
The GMC Sierra 3500HD is upgraded for this year with daytime running lights, new LEDs and a spray-on bedliner. This truck offers exceptional levels of customization, with options for branding, bed-steps, tie-downs, power outlets, paint finishes and more. Build your perfect Sierra with a range of wheel choices too.
We love the luxury touches of the Denali.
Awards and Accolades
The 2026 GMC Sierra 3500HD has always been a leading contender at the auto awards, and for many years it’s held one of the highest places for residual values in the trucks category. Last year it won North American Car of the Year too!
Why not head to Twins Buick GMC to book your test drive?
Shop New Sierra 3500HD
Choose Your Sierra 3500HD
From the work-ready Pro to the flagship Denali Ultimate — every trim available at Twins Buick GMC in Columbus, OH.
Pro
The hard-working foundation — 6.6L V8 gas, MultiPro tailgate, adaptive cruise control, and emergency braking standard.
SLE
Enhanced appointments with updated LEDs, spray-on bedliner, and additional connectivity and comfort features.
Elevation
Bold sport styling with blacked-out trim, unique wheel choices, and Elevation-exclusive exterior badging.
SLT
Premium comfort with available head-up display, heated and ventilated seats, and refined interior appointments.
AT4
Off-road ready with skid plates, suspension upgrades, all-terrain tires, and aggressive AT4 styling and badging.
*470 hp and 975 lb-ft of torque apply to the available 6.6L Turbo Duramax diesel engine paired with the 10-speed Allison automatic transmission. 6.6L V8 gas engine ratings vary; see dealer for details. Max towing of 20,000 lbs and max payload of 3,945 lbs when properly equipped; requires specific configuration. Towing and payload capacities are for comparison purposes only; always confirm prior to use. MultiPro tailgate and adaptive cruise control standard on select trims. Snow Plow prep available on select trims. Head-up display available on higher trims. North American Car of the Year award referenced applies to a prior Sierra HD model year; see gmc.com for current accolades. All specifications sourced from gmc.com. MSRP excludes tax, title, license, dealer fees, and optional equipment. Dealer not responsible for typographical errors. See Twins Buick GMC for complete details.