Your Complete Guide to the 2026 GMC Sierra 2500HD

About the 2026 GMC Sierra 2500HD

The 2026 GMC Sierra 2500HD is GMC's three-quarter-ton heavy-duty pickup, priced from $47,000 to $94,200 before destination across seven trims, from the work-ready Pro to the near-luxury Denali Ultimate. Two engines anchor the lineup: a standard 6.6L gas V8 and an available 6.6L Duramax turbo-diesel, both paired with the Allison 10-speed automatic. It comes in three cab styles, Regular, Double, and Crew, with standard and long beds, and tows up to 22,390 lbs when properly equipped with the diesel. Around Hot Springs, that range covers everything from a weekend tow rig to a daily work truck for crews across Arkansas.

Changes for 2026 are light: the platform carries over from its 2024 refresh, the paint palette gains Glacier White Tricoat and Coastal Dune, and the MultiPro tailgate moves from standard to optional on the SLT Crew Cab. The Duramax still makes 975 lb-ft of torque for serious grade pulling, and GMC advertises best-in-class standard Crew Cab front head and leg room. Note that Super Cruise hands-free driving is a Sierra 1500 feature and is not offered on the heavy-duty trucks.

Not sure where to start? Towing heavy? Open the Towing & Payload guide. Picking a trim? All Trims & Pricing lines them up. Cross-shopping? The Silverado 2500HD and Ford F-250 comparisons settle it. Budgeting the years ahead? The Maintenance guide has the cost to own.

Pricing and specifications for the 2026 GMC Sierra 2500HD were verified against the manufacturer's published 2026 information on June 28, 2026, and are before destination charges. Figures vary by cab, bed, drivetrain, and equipment; confirm details for a specific build with our team at Allen Tillery Buick GMC, 4573 Central Ave, Hot Springs, AR 71913.