# 2026 GMC SIERRA 3500HD DENALI DUALLY 4WD | 6.6L DURAMAX DIESEL | DENALI RESERVE | SUNROOF | HEAD-UP DISPLAY | 5TH WHEEL PREP

**BRAND NEW 2026 GMC SIERRA 3500HD DENALI CREW CAB 4WD DUAL REAR WHEEL — ONYX BLACK EXTERIOR | JET BLACK INTERIOR | 6.6L DURAMAX V8 TURBO-DIESEL | 10-SPEED AUTOMATIC | DENALI RESERVE PACKAGE | POWER SUNROOF | 15-INCH HEAD-UP DISPLAY | REAR CAMERA MIRROR | GOOSENECK/5TH WHEEL PREP PACKAGE | 14,000-LB GVWR | HEATED & VENTILATED FRONT SEATS | HEATED REAR SEATS | BOSE PREMIUM AUDIO | HD SURROUND VISION | GMC MULTIPRO TAILGATE**

Experience premium heavy-duty capability, exceptional diesel performance and signature Denali luxury with this **2026 GMC Sierra 3500HD Denali Crew Cab 4WD Dually**, available at Addison on Erin Mills Chevrolet Buick GMC in Mississauga, Ontario.

Finished in sophisticated **Onyx Black with a Jet Black interior**, this Sierra Denali combines the commanding presence of a dual-rear-wheel heavy-duty pickup with an impressive collection of luxury, towing and driver assistance features.

Powered by the legendary **6.6L Duramax V8 Turbo-Diesel paired with a 10-speed automatic transmission**, this Sierra is engineered for demanding work, recreational towing and long-distance travel.

This particular truck stands apart with the **Denali Reserve Package**, adding a power sunroof, 15-inch multicolour Head-Up Display and Rear Camera Mirror.

Additional highlights include the **Gooseneck/5th Wheel Prep Package, factory trailer brake controller, HD Surround Vision, Bed View Camera, Trailer Side Blind Zone Alert, Adaptive Cruise Control, heated and ventilated front seats, heated second-row seats and BOSE premium audio**.

## 6.6L DURAMAX V8 TURBO-DIESEL

**Heavy-duty diesel performance**

- **6.6L Duramax V8 Turbo-Diesel**
- **10-Speed Automatic Transmission**
- Four-Wheel Drive
- **Dual Rear Wheels**
- **14,000-lb (6,350-kg) Gross Vehicle Weight Rating**
- **3.42 Rear Axle Ratio**
- **Two-Speed Active Electronic AutoTrac Transfer Case**
- Automatic Locking Rear Differential
- Digital Variable Steering
- Integrated Trailer Brake Controller
- StabiliTrak Electronic Stability Control
- Trailer Sway Control
- Hill Start Assist

The 6.6L Duramax V8 Turbo-Diesel delivers the robust torque and sustained performance expected from GMC's heavy-duty diesel lineup.

Paired with the 10-speed automatic transmission, this powertrain is designed for confident operation under demanding conditions.

The dual-rear-wheel configuration provides a heavy-duty foundation for customers who require substantial hauling and trailering capability.

**Actual towing and payload capacities must be verified against the vehicle's specific configuration and weight ratings.**

## DUAL REAR WHEELS — 14,000-LB GVWR

**Heavy-duty capability**

This Sierra Denali features a factory dual-rear-wheel configuration with a **14,000-lb Gross Vehicle Weight Rating**.

The dual-rear-wheel setup is particularly attractive to customers who tow large recreational trailers, transport heavy equipment or require a truck designed for demanding applications.

Combined with the Duramax diesel powertrain, integrated trailer brake controller and Gooseneck/5th Wheel Prep Package, this Sierra offers an impressive heavy-duty equipment configuration.

## DENALI RESERVE PACKAGE

**Premium luxury and advanced technology**

This Sierra includes the desirable **Denali Reserve Package**, featuring:

- **Power Sunroof**
- **15-Inch Multicolour Head-Up Display**
- **Rear Camera Mirror**

The power sunroof adds natural light and fresh air to the spacious Crew Cab interior.

The 15-inch Head-Up Display projects selected driving information into the driver's forward field of view, helping reduce the need to look away from the road.

The Rear Camera Mirror provides an available camera-based view behind the vehicle, adding convenience when rearward visibility is limited.

These upgrades complement the already impressive standard equipment found in the Sierra Denali.

## GOOSENECK/5TH WHEEL PREP PACKAGE

**Ready for serious trailering applications**

This truck includes the optional **Gooseneck/5th Wheel Prep Package**, a highly desirable feature for customers planning to tow compatible fifth-wheel or gooseneck trailers.

Additional trailering equipment includes:

- **Gooseneck/5th Wheel Prep Package**
- **Integrated Trailer Brake Controller**
- **Hitch Guidance**
- **Hitch View**
- **In-Vehicle Trailering App**
- **Trailer Side Blind Zone Alert**
- **Bed View Camera**
- **HD Surround Vision**
- **Dual Rear Wheels**
- **Digital Variable Steering**
- **Trailer Sway Control**
- **Two-Speed AutoTrac Transfer Case**

The combination of factory trailer preparation, integrated trailer braking and advanced camera technology makes this Sierra particularly appealing for recreational and commercial towing applications.

A compatible hitch and all required towing equipment must be installed and used in accordance with the vehicle's ratings.

## DENALI LUXURY INTERIOR

**Premium comfort for everyday driving and long-distance travel**

- **Heated and Ventilated Front Seats**
- **Heated Second-Row Outboard Seats**
- **12-Way Power Driver's Seat**
- **Driver's Seat and Mirror Memory**
- **Heated Wrapped Steering Wheel**
- **Dual-Zone Automatic Climate Control**
- **BOSE Premium Sound System**
- **Wireless Smartphone Charging**
- **Power-Sliding Rear Window**
- **Universal Home Remote**
- **Adaptive Cruise Control**
- **Power Sunroof**
- **15-Inch Head-Up Display**
- **Rear Camera Mirror**
- **12.3-Inch Reconfigurable Driver Information Centre**
- 120V Instrument Panel Power Outlet

The heated and ventilated front seats provide year-round comfort, while the heated second-row outboard seats add an additional level of luxury for rear passengers.

The driver's seat and mirror memory settings make it convenient to restore preferred driving positions.

Combined with the spacious Crew Cab and premium Denali equipment, this Sierra delivers an upscale driving experience without sacrificing heavy-duty capability.

## 13.4-INCH GMC PREMIUM INFOTAINMENT SYSTEM

**Modern connectivity and entertainment**

- **13.4-Inch GMC Premium Infotainment Touchscreen**
- Google Built-In Compatibility
- Navigation Capability
- Wireless Apple CarPlay Compatibility
- Wireless Android Auto Compatibility
- Bluetooth Connectivity
- **BOSE Premium Audio**
- **Wireless Smartphone Charging**
- **12.3-Inch Digital Driver Information Centre**
- **15-Inch Head-Up Display**
- SiriusXM Audio Trial
- OnStar Basics Capability

The large 13.4-inch infotainment display provides convenient access to compatible smartphone integration, entertainment, vehicle settings and available navigation functions.

The 12.3-inch reconfigurable driver display and optional 15-inch Head-Up Display create a modern, driver-focused environment.

## HD SURROUND VISION & ADVANCED CAMERA TECHNOLOGY

**Enhanced visibility for a heavy-duty pickup**

- **HD Surround Vision**
- **Bed View Camera**
- **Rear Camera Mirror**
- **Hitch View**
- **Trailer Side Blind Zone Alert**
- **Front and Rear Park Assist**
- **Rear Cross Traffic Alert**

HD Surround Vision provides multiple camera perspectives to help with parking and low-speed manoeuvring.

The Bed View Camera provides a useful view of the cargo bed, while Hitch View assists when connecting compatible trailers.

The Rear Camera Mirror adds another available rearward viewing perspective.

These features are especially valuable on a full-size dual-rear-wheel pickup.

## GMC MULTIPRO TAILGATE & CARGO-BED FEATURES

**Practical heavy-duty functionality**

- **GMC MultiPro Tailgate**
- **Factory Spray-On Bedliner**
- **LED Cargo Bed Lighting**
- **120V Cargo Bed Power Outlet**
- **Bed View Camera**
- **Gooseneck/5th Wheel Prep Package**

The GMC MultiPro Tailgate provides multiple configurations designed to improve cargo-bed access and everyday functionality.

The factory spray-on bedliner helps protect the bed during regular use, while LED lighting improves visibility when loading or unloading equipment.

The Gooseneck/5th Wheel Prep Package adds further versatility for compatible towing applications.

## DENALI EXTERIOR STYLING

**Premium GMC heavy-duty design**

- **Onyx Black Exterior**
- **Dual Rear Wheels**
- **18-Inch Polished Forged Aluminum Wheels**
- **Chrome Assist Steps**
- **Power Sunroof**
- **Animated LED Projector Headlamps**
- **LED Front Fog Lamps**
- **Power-Folding and Power-Extending Trailering Mirrors**
- Heated and Auto-Dimming Upper Mirror Glass
- Integrated Mirror Turn Signals
- Mirror Perimeter Lighting
- **Rain-Sensing Windshield Wipers**
- **Factory Spray-On Bedliner**
- **GMC MultiPro Tailgate**

The Onyx Black exterior, polished forged aluminum wheels, chrome assist steps and signature Denali styling create an unmistakably premium appearance.

The dual-rear-wheel configuration gives this Sierra a commanding stance, while the power-extending trailering mirrors add functionality for towing applications.

## SIERRA HD PRO SAFETY

**Advanced driver assistance and safety technology**

- **Automatic Emergency Braking**
- **Forward Collision Alert**
- **Front Pedestrian Braking**
- **Lane Departure Warning**
- **Following Distance Indicator**
- **IntelliBeam Automatic High Beams**
- **HD Surround Vision**
- **Trailer Side Blind Zone Alert**
- **Rear Cross Traffic Alert**
- **Front and Rear Park Assist**
- **Driver Safety Alert Seat**
- **Adaptive Cruise Control**
- Rear Seat Reminder
- StabiliTrak Electronic Stability Control
- Trailer Sway Control
- Hill Start Assist

These features are designed to assist the driver with awareness, parking, manoeuvring and compatible trailering applications.

## ADDITIONAL HEAVY-DUTY EQUIPMENT

**HIGH IDLE SWITCH**

The optional high idle switch provides additional engine operating functionality for suitable stationary applications.

**SNOW PLOW PREP/CAMPER PACKAGE**

This truck includes the optional Snow Plow Prep/Camper Package, adding factory preparation for applicable equipment and usage requirements.

Compatibility and capacity must be verified before installing a snowplow, camper or other accessories.

## FACTORY-LISTED PACKAGES & OPTIONS

**6.6L DURAMAX V8 TURBO-DIESEL — $10,995**

Heavy-duty diesel powertrain with 10-speed automatic transmission and 5-year/160,000-km powertrain component warranty coverage, subject to manufacturer terms.

**DENALI RESERVE PACKAGE — $2,365**

Includes power sunroof, Rear Camera Mirror and 15-inch multicolour Head-Up Display.

**GOOSENECK/5TH WHEEL PREP PACKAGE — $630**

Factory preparation for compatible gooseneck and fifth-wheel towing equipment.

**HIGH IDLE SWITCH — $240**

Additional engine operating functionality.

**SNOW PLOW PREP/CAMPER PACKAGE — $75**

Factory preparation for applicable heavy-duty accessories.

**DUAL REAR WHEELS — NO ADDITIONAL CHARGE LISTED**

**3.42 REAR AXLE RATIO — NO ADDITIONAL CHARGE LISTED**

**14,000-LB GVWR — NO ADDITIONAL CHARGE LISTED**

**TOTAL LISTED OPTIONS: $14,305 CAD**

## WHY CHOOSE THIS 2026 GMC SIERRA 3500HD DENALI DUALLY?

This Sierra Denali combines the heavy-duty capability of a dual-rear-wheel diesel pickup with an outstanding collection of luxury and technology features.

The **6.6L Duramax V8 Turbo-Diesel and 10-speed automatic transmission** provide the robust performance expected from GMC's heavy-duty lineup.

The **dual-rear-wheel configuration, 14,000-lb GVWR and Gooseneck/5th Wheel Prep Package** make this truck particularly appealing to customers with demanding trailering requirements.

The **Denali Reserve Package** adds a power sunroof, 15-inch Head-Up Display and Rear Camera Mirror.

The **heated and ventilated front seats, heated rear seats, BOSE premium audio, wireless charging and dual-zone climate control** create a luxurious cabin environment.

The **HD Surround Vision, Bed View Camera, Hitch View, Trailer Side Blind Zone Alert and integrated trailer brake controller** add practical technology for everyday operation and compatible towing.

Whether you're searching for a **2026 GMC Sierra 3500HD Denali Duramax Dually for sale in Mississauga**, a **6.6L Duramax Diesel Crew Cab 4WD with fifth-wheel preparation**, or a **luxury heavy-duty GMC pickup with sunroof, Head-Up Display and advanced trailering cameras**, this Sierra deserves your attention.

**6.6L DURAMAX V8 TURBO-DIESEL. 10-SPEED AUTOMATIC. DENALI CREW CAB 4WD. DUAL REAR WHEELS. 14,000-LB GVWR. DENALI RESERVE PACKAGE. POWER SUNROOF. 15-INCH HEAD-UP DISPLAY. REAR CAMERA MIRROR. GOOSENECK/5TH WHEEL PREP PACKAGE. HEATED AND VENTILATED FRONT SEATS. HEATED REAR SEATS. BOSE PREMIUM AUDIO. HD SURROUND VISION. BED VIEW CAMERA. ADAPTIVE CRUISE CONTROL. GMC MULTIPRO TAILGATE.**

A premium GMC Sierra Denali combining serious heavy-duty diesel capability with exceptional luxury and advanced technology.

## AVAILABLE AT ADDISON ON ERIN MILLS CHEVROLET BUICK GMC

6600 Turner Valley Road, Mississauga, Ontario.

Proudly serving Mississauga, Oakville, Brampton, Toronto, Burlington and the Greater Toronto Area.

Contact our sales team today to learn more about this brand-new **2026 GMC Sierra 3500HD Denali Crew Cab 4WD Dually**, explore available financing options or schedule your test drive.

*Connected services, SiriusXM, Google Built-In and compatible smartphone features are subject to applicable terms and availability. Driver assistance features do not replace attentive driving. Towing and payload ratings depend on the vehicle's specific configuration and applicable weight limits. Warranty coverage is subject to manufacturer terms and whichever limit comes first.*