2026 GMC Sierra 2500 HD Denali
Luxury Meets Heavy-Duty Power
The 2026 GMC Sierra 2500 HD Denali defines what it means to combine uncompromising strength with premium refinement. Engineered for those who demand more from a heavy-duty truck, it delivers immense capability, cutting-edge technology, and handcrafted luxury — all wrapped in unmistakable Denali design.
Power That Commands Respect
Beneath the hood lies the legendary 6.6L Duramax Turbo-Diesel V8 engine (L5P) producing 470 horsepower and an incredible 975 lb-ft of torque. This powerhouse pairs with an advanced 10-speed automatic transmission (MGM) to deliver seamless torque delivery, whether you’re towing a fifth-wheel trailer or navigating urban streets.
With Exhaust Brake (K40), 220-amp alternator (KW5), and High Idle Control (UF3), the Sierra Denali is engineered to perform — even in the most demanding conditions. The Gooseneck/5th-Wheel Prep Package (Z6A) and 3.42 rear axle ratio (GU6) make it a towing champion, while the Heavy-Duty Front Spring/Camper Package (F60) enhances stability and ride control when fully loaded.
Add in an engine block heater (K05) and winter grille cover (BHP), and this truck is built to conquer every Canadian season.
Bold Design. Signature Denali Presence.
Finished in Onyx Black (GBA), the Sierra Denali commands attention with its massive chrome grille, signature C-shaped LED lighting, and 20-inch Ultra-Bright Machined Aluminum Wheels (Q7F) with chrome inserts and black painted pockets.
Power-retractable assist steps with LED perimeter lighting (BRS) provide both function and finesse, while the available Black Badging Package (RFE) — featuring Black GMC emblems (SFZ) and Black Sierra nameplates (RIK) — adds a custom, stealth-inspired look.
All-Terrain tires (QF9) deliver confident grip across road and trail, while premium touches like chrome mirror caps, Denali badging, and illuminated accents reinforce its position as the most luxurious truck in its class.
First-Class Comfort and Craftsmanship
Inside, the Jet Black Forge perforated leather seating (H2X) wraps the cabin in sophistication. Heated and ventilated front bucket seats (A50) with a full centre console (D07) provide unmatched comfort and control. Premium floor liners with removable carpet inserts (BKF/BKE) protect the cabin while maintaining a polished appearance.
Enjoy the open air with the power sunroof (CF5) and utilize smart storage solutions with the rear underseat lockable storage bin (VBJ). Every inch of this interior is refined, quiet, and built to handle long hauls or short commutes in equal style.
Technology That Redefines Heavy-Duty
The Denali Reserve Package (PEC) equips this model with the Technology Package (CWM), featuring:
15" Multicolour Head-Up Display (UV6) projecting key performance data onto the windshield
Rear Camera Mirror (DRZ) with full camera display
13.4" GMC Premium Infotainment System (IOK) with built-in Google Maps, Google Assistant, and voice-activated navigation
Wireless Apple CarPlay® and Android Auto™ compatibility
Enjoy immersive sound from the Bose® Premium Audio System, and stay seamlessly connected with Bluetooth®, OnStar®, and Wi-Fi® hotspot capability.
Integrated In-Vehicle Trailering App (UET), Trailer Tire Pressure Monitor Sensors (PTT), and Hitch Guidance with Hitch View make towing smarter, safer, and more precise than ever before.
Capability & Utility
The Sierra Denali HD is built to handle every challenge with ease:
11,750 lb GVWR (JGP)
Gooseneck/5th-Wheel Prep Package (Z6A)
Exhaust Brake and Tow/Haul Mode
220-Amp Alternator and Heavy-Duty Cooling
Integrated Trailer Brake Controller and Trailering Provisions
Bed-Mounted 7-Pin Harness for Trailer Connectivity
Premium Cargo Bed Lighting and CornerStep Rear Bumper
Whether hauling construction equipment or a luxury camper, the Denali HD blends effortless power with professional-grade confidence.
Key Highlights
6.6L Duramax Turbo-Diesel V8 – 470 hp / 975 lb-ft torque
10-Speed Automatic Transmission
Onyx Black Exterior with Black Badging Package
20" Ultra-Bright Machined Aluminum Wheels
Jet Black Forge Leather Interior
Denali Reserve Package with Technology Package
15" Head-Up Display & Rear Camera Mirror
Bose® Premium Audio System
Gooseneck/5th-Wheel Prep Package
Power-Retractable Assist Steps with LED Lighting
Sunroof & Premium Floor Liners
Trailer Tire Pressure Monitoring System
Built for Canada
With block heater, battery protection, high-output alternator, and cold-climate engineering, the 2026 Sierra Denali 2500 HD is designed to perform flawlessly across Ontario’s toughest conditions — from construction sites to cottage country.
Now Available at Boyer Chevrolet Buick GMC Ajax 📍 425 Bayly Street West, Ajax, Ontario 📞 905-427-2500
