New 2026 GMC Sierra 3500HD

Experience the 2026 GMC Sierra 3500HD AT4 Crew Cab 4WD in Summit White, built for heavy-duty performance and advanced technology tailored for demanding drivers.

Powered by a Duramax 6.6L Turbo-Diesel V8 engine delivering 470 hp and an impressive 975 lb-ft of torque, this truck is engineered for serious towing and hauling. The 10-speed automatic transmission and four-wheel drive with locking limited-slip differential ensure confident control on any terrain. The Gooseneck/5th Wheel Prep Package provides a versatile hitch platform with a 7-pin trailer harness, ideal for heavy trailers.

Inside, the AT4 Premium Plus Package includes a power sunroof and the Technology Package, featuring a 13.4" diagonal premium GMC infotainment system with Google built-in apps, a multicolour 15" diagonal head-up display, and a rear camera mirror with an auto-dimming full camera display for enhanced visibility. The cabin offers heated and cooled leather bucket seats with power adjustments and memory settings, plus a rear sliding power window with defogger.

Exterior highlights include power-retractable assist steps with LED lighting, running boards, a bed liner, integrated tailgate step, and dealer-installed black badging and wheel arch mouldings for a rugged, distinctive look. Safety is comprehensive with blind spot monitoring, front collision mitigation, lane departure warning, and adaptive cruise control. This Sierra 3500HD is ready to tackle the toughest jobs with capability and confidence.