8 Results
Truck Power Event
In Transit
Stock#: 25G149
VIN: 1GT4UREY0SF274663

New 2025 GMC Sierra 2500HD 4WD Denali

Denali 4WD Crew Cab Standard Box Denali Pickup Crew Cab Pickup 4WD 10-Speed Automatic Turbocharged Diesel V8 6.6L/
WhiteSummit White Jet Black
Original Price
$ 122,351
Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
-$2,500
Employee Pricing For You
-$11,675
Roy Foss Price
$108,176
Automatic
4WD
Turbocharged Diesel V8 6.6L/
summit white/jet black
Key Features
  • 4 wheel Drive 4 wheel Drive
  • Anti Lock Braking System Anti Lock Braking System
  • Bed Liner Bed Liner
  • Wifi Wifi
  • Power Seat(s) Power Seat(s)
Truck Power Event
In Transit
Stock#: 25G151
VIN: 1GT4UREY1SF274896

New 2025 GMC Sierra 2500HD 4WD Denali

Denali 4WD Crew Cab Standard Box Denali Pickup Crew Cab Pickup 4WD 10-Speed Automatic Turbocharged Diesel V8 6.6L/
BlackOnyx Black Jet Black
Original Price
$ 121,351
Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
-$2,500
Employee Pricing For You
-$11,675
Roy Foss Price
$107,176
Automatic
4WD
Turbocharged Diesel V8 6.6L/
onyx black/jet black
Key Features
  • 4 wheel Drive 4 wheel Drive
  • Anti Lock Braking System Anti Lock Braking System
  • Bed Liner Bed Liner
  • Wifi Wifi
  • Power Seat(s) Power Seat(s)
In Transit
Stock#: 26G201
VIN: 1GT4ULEY2TF244157

New 2026 GMC Sierra 2500HD 4WD Pro

Pro Crew Cab Standard Box 4-Wheel Drive Pro Pickup Crew Cab Pickup 4WD 10-Speed Automatic Turbocharged Diesel V8 6.6L/
WhiteSummit White Jet Black
Original Price
$ 94,551
Employee Pricing For You
-$7,682
Roy Foss Price
$86,869
Automatic
4WD
Turbocharged Diesel V8 6.6L/
summit white/jet black
Key Features
  • Keyless Start Keyless Start
  • 4 wheel Drive 4 wheel Drive
  • Anti Lock Braking System Anti Lock Braking System
  • Wifi Wifi
  • Back-Up Camera Back-Up Camera
In Transit
Stock#: 26G166
VIN: 1GT4UXEY2TF220481

New 2026 GMC Sierra 2500HD 4WD Denali Ultimate

Denali Ultimate Crew Cab Standard Box 4-Wheel Drive Denali Ultimate Pickup Crew Cab Pickup 4WD 10-Speed Automatic Turbocharged Diesel V8 6.6L/
BlueDownpour Metallic Alpine Umber
Original Price
$ 133,291
Employee Pricing For You
-$12,584
Roy Foss Price
$120,707
Automatic
4WD
Turbocharged Diesel V8 6.6L/
downpour metallic/alpine umber
Key Features
  • 4 wheel Drive 4 wheel Drive
  • Anti Lock Braking System Anti Lock Braking System
  • Sun / Moonroof Sun / Moonroof
  • Wifi Wifi
  • Heated Seats Heated Seats
In Transit
Stock#: 26G168
VIN: 1GT4UXEY7TF220153

New 2026 GMC Sierra 2500HD 4WD Denali Ultimate

Denali Ultimate Crew Cab Standard Box 4-Wheel Drive Denali Ultimate Pickup Crew Cab Pickup 4WD 10-Speed Automatic Turbocharged Diesel V8 6.6L/
BlackOnyx Black Alpine Umber
Original Price
$ 132,796
Employee Pricing For You
-$12,525
Roy Foss Price
$120,271
Automatic
4WD
Turbocharged Diesel V8 6.6L/
onyx black/alpine umber
Key Features
  • 4 wheel Drive 4 wheel Drive
  • Anti Lock Braking System Anti Lock Braking System
  • Sun / Moonroof Sun / Moonroof
  • Wifi Wifi
  • Heated Seats Heated Seats
In Transit
Stock#: 26G265
VIN: 1GT4UPEY6TF320518

New 2026 GMC Sierra 2500HD 4WD AT4

AT4 Crew Cab Standard Box 4-Wheel Drive AT4 Pickup Crew Cab Pickup 4WD 10-Speed Automatic Turbocharged Diesel V8 6.6L/
WhiteSummit White Jet Black with Kalahari accents
Original Price
$ 120,056
Employee Pricing For You
-$11,646
Roy Foss Price
$108,410
Automatic
4WD
Turbocharged Diesel V8 6.6L/
summit white/jet black with kalahari accents
Key Features
  • 4 wheel Drive 4 wheel Drive
  • Anti Lock Braking System Anti Lock Braking System
  • Wifi Wifi
  • Power Seat(s) Power Seat(s)
  • Heated Seats Heated Seats
In Transit
Stock#: 26G281
VIN: 1GT4UZEY1TF332457

New 2026 GMC Sierra 2500HD 4WD AT4X

AT4X Crew Cab Standard Box 4-Wheel Drive AT4X Pickup Crew Cab Pickup 4WD 10-Speed Automatic Turbocharged Diesel V8 6.6L/
BlackOnyx Black Obsidian Rush
Original Price
$ 132,306
Employee Pricing For You
-$12,984
Roy Foss Price
$119,322
Automatic
4WD
Turbocharged Diesel V8 6.6L/
onyx black/obsidian rush
Key Features
  • 4 wheel Drive 4 wheel Drive
  • Anti Lock Braking System Anti Lock Braking System
  • Sun / Moonroof Sun / Moonroof
  • Bed Liner Bed Liner
  • Heated Seats Heated Seats
In Transit
Stock#: 26G269
VIN: 1GT4ULE79TF326328

New 2026 GMC Sierra 2500HD 4WD Pro

Pro Crew Cab Long Box 4-Wheel Drive Pro Pickup Crew Cab Pickup 4WD 10-Speed Automatic Gas V8 6.6L/
WhiteSummit White Jet Black
Original Price
$ 84,151
Employee Pricing For You
-$6,462
Roy Foss Price
$77,689
Automatic
4WD
Gas V8 6.6L/
summit white/jet black
Key Features
  • Keyless Start Keyless Start
  • 4 wheel Drive 4 wheel Drive
  • Anti Lock Braking System Anti Lock Braking System
  • Cruise Control Cruise Control
  • Keyless Entry Keyless Entry

New GMC Sierra 2500HD for Sale in Thornhill, ON

Explore New GMC Sierra HD Heavy-Duty Pickup Trucks in Thornhill, ON

The new GMC Sierra HD steps forward when half-ton trucks reach their limits. This heavy-duty powerhouse delivers massive capability wrapped in commanding styling. The elevated hood line and angular wheel arches communicate serious working intent. Every design element reinforces the truck's heavy-duty mission.

The MultiPro Tailgate system enhances loading and unloading efficiency. Chassis engineering prioritizes stability under extreme loads. The cabin maintains premium comfort despite demanding work conditions. Both Crew and Double Cab configurations provide ample space for crews and equipment. The GMC Sierra HD balances maximum capability with daily driving refinement, making it suitable for the most challenging professional applications.

Popular GMC Sierra HD Trim Levels

GMC Sierra HD trims range from work-focused basics to premium luxury configurations. The lineup includes both 2500 and 3500 variants for different workload requirements. The 2500HD handles heavy conventional trailer duties with confidence. The 3500HD offers single or dual rear wheel configurations for ultimate stability. Both versions share identical trim levels, engines, and feature availability. Trim levels work with either 2500HD or 3500HD chassis configurations. The 3500HD model offers dual rear wheels for maximum stability. Various cab and bed combinations accommodate different crew sizes and equipment needs.

  • Pro:  The foundation Pro model concentrates on essential capabilities at reasonable pricing. The standard 6.6-litre gasoline V8 pairs with Allison's proven ten-speed automatic transmission. Practical materials and easy-maintenance surfaces suit demanding work environments. The MultiPro Tailgate adds versatility for loading and job site tasks.
  • AT4: Off-road trails and rugged work sites demand the AT4's specialized equipment and enhanced capability. Factory lift components increase ground clearance for rough terrain navigation. Off-road suspension tuning and protective skid plates handle harsh conditions. All-terrain tires provide confident traction on loose or uneven surfaces. Distinctive styling elements improve visibility and project rugged capability.
  • Denali: Premium comfort defines the Denali experience without sacrificing working capability. Leather-appointed seating and enhanced audio systems create an upscale environment. Signature exterior accents distinguish Denali models from standard trim levels. Super Cruise technology enables hands-free highway driving on compatible roads. Advanced trailering assistance and camera systems support confident maneuvering.
  • Other Trim Levels: The SLE and SLT trim levels add desirable conveniences to the entry-level Pro foundation. Larger display screens and popular option packages enhance daily usability. AT4X takes off-road capability further with locking differentials and specialized dampers. Denali Ultimate represents the pinnacle with premium materials and comprehensive assistance systems. The AT4X configuration is exclusive to 2500HD models.

GMC Sierra HD Key Features

Modern heavy-duty trucks must excel across multiple performance categories simultaneously. The new GMC Sierra HD combines exceptional strength with contemporary technology and user convenience. Proven powertrains handle everything from moderate hauling to sustained heavy-duty towing. Advanced trailering systems simplify hitching procedures and backing maneuvers. Multiple cab configurations and storage solutions organize people and equipment efficiently. Safety systems and driver assistance features enhance confidence in traffic and work environments.

  • Engine and Fuel Economy: Two monumental powertrains address different performance requirements and operating preferences. The standard 6.6-litre gasoline V8 produces 401 horsepower and 464 lb.-ft. of torque. Allison's ten-speed automatic transmission ensures smooth power delivery under all conditions. The available 6.6-litre Duramax turbodiesel generates 470 horsepower and massive 975 lb.-ft. of torque. This diesel option provides strong acceleration, high-grade towing performance, and engine braking control.
  • Towing Capacity and Bed Size: Maximum towing ratings demonstrate the GMC Sierra HD's exceptional capability across both chassis variants. The 2500HD achieves up to 8,392 kg with proper equipment and configuration. The 3500HD reaches 16,329 kg with diesel power and dual rear wheels. Two bed lengths accommodate different cargo requirements and trailer combinations. Standard beds measure 2,089 mm while long beds extend to 2,496 mm. Regular Cab models use long beds exclusively. Double and Crew Cab configurations offer either bed length option.
  • Technology and Connectivity: A large 13.4-inch touchscreen is the command center for infotainment functions. The 12.3-inch driver display presents customizable information layouts and vehicle status updates. An available 15-inch head-up display projects critical information onto the windshield. Up to fourteen camera views assist with parking and trailer operations. Transparent Trailer technology helps with lane changes and backing maneuvers. Wireless smartphone integration eliminates cable connections for calls and media streaming. Built-in trailering tools provide checklists and monitoring capabilities.
  • Cab Size, Seating and Safety: Three cab configurations accommodate different crew sizes and equipment storage needs. Regular, Double, and Crew options provide flexibility for various applications. Front seating choices include bench or bucket configurations. Supportive cushions and sound insulation reduce fatigue during long work days. GMC Pro Safety includes automatic emergency braking and lane keeping assistance. Available features add blind zone monitoring, rear cross-traffic alerts, and adaptive cruise control. Trailering-specific cruise control maintains safe following distances with heavy loads.

Tips for Purchasing a New GMC Sierra HD

Experience a new level of choice and service with a new GMC Sierra HD from Roy Foss Chevrolet Buick GMC Thornhill, Ontario. Our reputation across the Greater Toronto Area is built on lasting relationships, integrity, and delivering an outstanding vehicle-buying experience every time.

  • Why Buy Here? At Roy Foss Chevrolet Buick GMC Thornhill, we are dedicated to your satisfaction. Our experienced team genuinely listen to your needs, providing knowledgeable and honest advice on every Buick, Chevrolet, and GMC model we offer. We uphold high standards for customer care and are proud to be a trusted source for drivers in Thornhill and beyond.
  • Warranty and Protection: Every new GMC Sierra HD comes with comprehensive manufacturer warranty coverage. This typically includes a base warranty and a powertrain warranty, plus roadside assistance and corrosion protection. Our team can review all available coverage terms and help you understand options for extended warranty plans, so you feel protected for years to come.
  • Test Drive: At Roy Foss Chevrolet Buick GMC Thornhill, scheduling a test drive is quick and convenient. Visit us in person, call, or book your time online. Our staff will guide you through the signature features, technology, and comforts of the GMC Sierra HD, ensuring you have all the information you need before you decide.
  • Financing and Leasing: We provide a wide range of financing and leasing solutions designed to suit your budget and personal needs. From fast online pre-approvals to one-on-one support, our finance team works to get you behind the wheel easily. We will explain all your options and tailor a plan that helps you drive home your new GMC Sierra HD with total confidence.

* HST and licensing fees are extra. Finance and Lease offers on approved credit. Regional offers, lease and finance conditions apply. Use of any calculation and/or tools on royfossthornhill.com does not constitute an offer of direct financing or any particular lease, finance, purchase option or transaction. Calculation and tools are intended for illustrative purposes only. Rates and requirements may vary depending on credit worthiness. Every effort is made to ensure the accuracy of the content on the pages on royfossthornhill.com. In the event of a discrepancy, error or omission, vehicle prices, offers, and features as established by GM Canada and participating Cadillac dealers in Canada, will prevail.*

* Federal Select Luxury Tax is included in the advertised retail selling price where applicable. Federal Select Luxury Tax will be recalculated depending on the purchase of additional vehicle items and options. Federal Select Luxury Tax only applies to vehicles with an MSRP over $100,000; the lesser of either 20% of the amount over $100,000 or 10% of the entire MSRP amount.

* Every reasonable effort is made to ensure the accuracy of the information listed above. Vehicle pricing, incentives, options (including standard equipment), and technical specifications listed is for the vehicle above may not match the exact vehicle displayed. Please confirm with a sales representative the accuracy of this information.

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