New 2026 GMC Sierra 3500HD

Experience the power and capability of the 2026 GMC Sierra 3500HD AT4 Crew Cab 4WD, designed for demanding work and off-road adventures.

This diesel-powered Sierra 3500HD is equipped with a Duramax 6.6L Turbo-Diesel V8 engine delivering an impressive 470 hp and 975 lb-ft of torque, paired with a 10-speed automatic transmission and four-wheel drive for exceptional towing and hauling performance. The Gooseneck/5th Wheel Prep Package adds versatility for heavy-duty towing needs, featuring a hitch platform and bed-mounted 7-pin trailer harness.

The AT4 Premium Plus Package enhances comfort and technology with a power sunroof, multicolour 15" diagonal Head-Up Display, and a rear camera mirror with auto-dimming and full camera display. Power-retractable assist steps with LED lighting and body-colour wheel arch mouldings add convenience and rugged style. Inside, enjoy heated and cooled leather bucket seats with power adjustments, lumbar support, and seat memory for driver and passenger.

Safety is comprehensive with features including automatic high beams, blind spot monitor, cross-traffic alert, front collision mitigation, lane departure warning, and integrated turn signal mirrors. The Sierra rides on aluminum wheels with 4-wheel disc brakes, ABS, traction and stability control, plus tow hooks and a bed liner for durability. Onyx Black exterior with black badging completes this commanding truck’s bold presence.