2026
GMC SIERRA 3500HD DENALI ULTIMATE 4X4 CREW CAB 6.75 FT. BOX SRW

The 2026 GMC Sierra 3500HD Denali Ultimate 4WD is the ultimate expression of heavy-duty capability blended with premium luxury. Designed for serious towing, tough terrain, and refined travel, this truck delivers power, comfort, and cutting-edge technology in equal measure. Whether hauling equipment, navigating snowy roads, or cruising long distances, the Sierra 3500HD Denali Ultimate handles it all with confidence and style. 

Performance & Capability 

• Engine: 6.6L Duramax® Turbo-Diesel V8 engine delivering massive torque and proven reliability 

• Transmission: Allison® 10-speed automatic transmission for smooth power delivery and towing control 

• Drivetrain: Autotrac® 4WD with two-speed transfer case and automatic locking rear differential 

• Suspension: Z71 off-road suspension package with skid plates for rugged terrain 

• Braking & Stability: 4-wheel anti-lock disc brakes, Hill Descent Control, and Trailer Brake Controller 

• Towing: Equipped with Gooseneck/5th Wheel Prep Package, Trailer Tire Pressure Monitor, Hitch Guidance, and Trailer Side Blind Zone Alert 

• Cooling & Support: Engine oil cooler, transmission fluid cooler, heavy-duty air filter, and exhaust brake for demanding workloads 

• Drive Comfort: Digital Variable Steering Assist and reinforced defrost/heating system for smooth, stable control in all conditions 

Interior Comfort & Design 

• Seating: Heated and ventilated front bucket seats with power massage and power-adjustable bolsters 

• Rear Seats: Heated second-row outboard seating and under-seat storage with rear seat reminder system 

• Cabin Luxury: Jet Black / Alpine Umber full-grain leather interior with real wood trim and premium headliner 

• Climate: Dual-zone automatic climate control with rear air vents 

• Driver Convenience: Push-button start, power sliding rear window, wireless charging, and memory settings for seats and mirrors 

• Sunroof: Power panoramic sunroof for added light and luxury 

• Noise Reduction: Deep-tinted glass and premium materials for a quiet ride 

Technology & Connectivity 

• Infotainment: 13.4" GMC Premium Infotainment System with Google Built-In, navigation, and voice recognition 

• Connectivity: Wireless Apple CarPlay® & Android Auto™, 4G LTE Wi-Fi hotspot capability 

• Displays: 12" reconfigurable digital driver display and head-up display (HUD) for key info at a glance 

• Audio: Premium Bose® sound system and available MultiPro™ Tailgate Audio by Kicker® 

• Cameras: HD Surround Vision, Bed View Camera, Rear Camera Mirror, Hitch View, and Trailer Camera Provisions 

• Power Outlets: Dual 120V AC outlets (interior and bed-mounted) and multiple USB ports in both rows 

Safety & Driver Assistance 

• Airbag Coverage: Full suite of front, side, curtain, and passenger airbag systems 

• Driver Aids: Adaptive Cruise Control, Forward Collision Alert, Automatic Emergency Braking, and Front Pedestrian Braking 

• Lane Safety: Lane Departure Warning and Following Distance Indicator 

• Parking Assistance: Front and Rear Park Assist with Rear Cross Traffic Alert 

• Visibility: LED headlamps, fog lamps, cargo bed lighting, and rain-sensing windshield wipers 

• Teen Driver Mode: Custom settings and report card system to encourage safe driving habits 

Exterior Styling & Utility 

• Exterior Colour: Titanium Rush Metallic with chrome mirror caps and chrome recovery hooks 

• Wheels & Tires: 20" machined aluminum wheels with LT275/65R-20 all-terrain tires and full-size matching spare 

• Tailgate: GMC MultiPro™ Tailgate with EZ lift, power lock/release, and integrated Kicker® audio system 

• Bed Utility: Spray-on bedliner, LED cargo lighting, 120V power outlet, and bed view camera 

• Steps & Mirrors: Power-retractable assist steps with perimeter lighting and trailer mirrors with auto-dimming, heat, and task lighting 

• Winter Readiness: Engine block heater, strong defrost system, and optional winter grille cover 

For those who demand uncompromising power, luxury, and utility, the 2026 GMC Sierra 3500HD Denali Ultimate 4WD delivers a class-defining experience — engineered to master the toughest jobs while providing a first-class cabin for every mile ahead.