Experience commanding power and refined comfort in the 2026 GMC Sierra 3500HD Denali Ultimate 4WD Crew Cab built for demanding work and sophisticated driving. This Sierra 3500HD features a robust 6.6L turbocharged diesel V8 engine paired with a smooth 10-speed automatic transmission delivering exceptional torque and capability for heavy-duty tasks. Its 4x4 drivetrain and locking limited-slip differential ensure confident traction and control across diverse terrains. The truck rides on durable aluminum wheels and includes a tow hitch and tow hooks ready for your toughest hauls. Step inside the Alpine Umber interior where premium leather bucket seats with heating and cooling functions provide comfort for all-day drives. Both driver and passenger seats offer power adjustments and memory settings while rear heated seats and a pass-through rear bench enhance passenger convenience. The leather-wrapped steering wheel includes audio controls and heating for added comfort. Safety is paramount with features like blind spot monitoring cross-traffic alert front collision mitigation and warning lane departure warning and automatic high beams. The advanced Aerial View Display system heads-up display back-up camera and rear parking aid support confident manoeuvring and situational awareness. Additional highlights include a sun/moonroof running boards power folding heated mirrors with memory remote engine start adaptive cruise control premium sound system satellite radio and WiFi hotspot making this truck as connected as it is capable. ?