2026 GMC Sierra 3500HD Denali Ultimate

Experience the power and luxury of the 2026 GMC Sierra 3500HD Denali Ultimate, a diesel 4x4 crew cab built for demanding work and refined comfort.

This Sierra 3500HD is equipped with a robust Duramax 6.6L Turbo-Diesel V8 engine delivering 470 hp and an impressive 975 lb-ft of torque, paired with a smooth 10-speed automatic transmission. Its four-wheel-drive system and locking limited-slip differential ensure exceptional traction and control on any terrain. The truck features all-terrain tires front and rear, aluminum wheels, and power retractable running boards for easy access.

Designed for heavy-duty towing, it includes a Gooseneck/5th Wheel prep package with a hitch platform and bed-mounted 7-pin trailer harness, plus a bed liner and integrated tailgate step for convenience. Safety is paramount with automatic high beams, blind spot monitoring, cross-traffic alert, front collision mitigation, lane departure warning, and multiple airbags.

Inside, the crew cab offers heated and cooled leather bucket seats with power adjustments, lumbar support, seat memory, and massage functions for driver and passenger. The cabin is enhanced with a heads-up display, panoramic sun/moonroof, premium sound system, adaptive cruise control, and an aerial view display system. This Sierra 3500HD Denali Ultimate combines rugged capability with premium features tailored for drivers who demand excellence.