Heavy-duty capability meets cutting-edge innovation in the 2025 GMC Sierra 2500 and 3500 HD, performance-driven trucks built to take on whatever the day demands. Engineered for exceptional power, advanced towing technologies, and smart functionality, the latest Sierra HD models are ready for tough jobs, heavy hauls, and everything in between. Continue reading to explore what sets the new Sierra HD apart from the rest.
You may also be interested in other truck models, such as the GMC Sierra 1500 or Chevrolet Silverado 1500
Exterior
Robust & Modern Design
As you have come to expect from GMC, the 2025 Sierra HD lineup delivers bold, head-turning design that sets it apart as the premium choice in its class. From the signature LED daytime running lights to the commanding front fascia, every detail is perfected to make a lasting impression.
Exterior Paint Colours
Customize your 2025 GMC Sierra HD to suit your business or personal driving needs, featuring a variety of colour options to choose from, including: (Extra Charge Colour*)
- Summit White
- Onyx Black
- Sterling Metallic
- White Frost Tricoat*
- Volcanic Red Tintcoat*
- Titanium Rush Metallic*
Interior
Work-Ready Cabin
Tackle your next job without worrying one bit about damaging the interior when you drive the 2025 GMC Sierra 2500 or 3500 HD, featuring rubberized vinyl floor covering and vinyl seat trim. The durable, heavy-duty vinyl is designed to withstand the daily abuse of hard work around the job site, letting you focus on getting the job done.
Premium Comfort
For those seeking premium comfort during long hauls and extended drives, the higher trim levels of the 2025 GMC Sierra HD offer a range of upscale interior enhancements. These available features include:
- Premium Leather-Appointed Seating
- Heated and Ventilated Front Seats
- Heated Rear Seats & Steering Wheel
- Dual-Zone Automatic Climate Control
Performance
Duramax Turbo-Diesel V8
Whether you are looking for a 2025 GMC Sierra 2500 or 3500 HD, you will be pleased to know that it has the option for a powerful 6.6L Duramax Turbo-Diesel V8 engine, delivering 470 horsepower and an impressive 975 lb-ft of torque. Not only does this engine deliver enhanced performance, but it also increases capability for maximum work efficiency.
Max Towing Capability
Tow with confidence in a capable 2025 GMC Sierra HD pickup truck, giving you varying levels of towing power and solutions. For the 2025 GMC Sierra 2500 HD, you are able to maximize its towing capacity using a gooseneck/fifth-wheel attachment to reach a rating of 21,870 pounds with the diesel engine. Similarly, the 2025 GMC Sierra 3500 HD has the ability to adapt a gooseneck/fifth-wheel trailer, but its optional dual rear wheels increase the max towing capacity to 36,000 pounds.
| Specifications: | 2025 GMC Sierra 2500 HD | 2025 GMC Sierra 3500 HD | ||
| Engine Type | 6.6L V8 Gas | 6.6L Duramax Turbo-Diesel V8 | 6.6L V8 Gas | 6.6L Duramax Turbo-Diesel V8 |
| Horsepower | 401 | 470 | 401 | 470 |
| Torque (lb-ft) | 464 | 975 | 464 | 975 |
| Max Towing Capacity (lb/kg) | 17,370 / 7,879 | 21,870 / 9,920 | 19,080 / 8,655 | 36,000 / 16,329 |
| Transmission | Allison® 10-Speed Automatic | Allison® 10-Speed Automatic | Allison® 10-Speed Automatic | Allison® 10-Speed Automatic |
Technology
Massive Screens
From the infotainment display to the driver information cluster, the 2025 GMC Sierra HD lineup offers a range of impressive screen options designed for seamless information delivery. Available features that become standard starting with the SLE trim level include a 13.4-inch diagonal center touchscreen and a 12.3-inch diagonal digital Driver Information Centre display.
Wireless Connectivity
For those moments where you might need a bit more convenience when navigating your commute in the 2025 GMC Sierra HD truck, you will be pleased to know that it can be optioned with wireless technologies such as:
- Wireless Apple CarPlay
- Wireless Android Auto
- Wireless Phone Charger
Safety & Driver Assistance
Towing Support Features
Big hauls and towing a trailer bring challenges that can make driving difficult, but you can hit the road with peace of mind in a 2025 GMC Sierra HD, which can be equipped with available towing support features that can include:
- Auxiliary Trailer Camera
- Bed View Camera
- Hitch Guidance
- Trailer Tire Pressure & Temperature Sensors
Driver Assistance Features
Feel total confidence and security when navigating the road ahead in the 2025 GMC Sierra 2500 or 3500 HD, offering a vast selection of advanced driver assistance features as standard, such as:
- Automatic Emergency Braking
- Forward Collision Alert
- Front Pedestrian Braking
- Lane Departure Warning
2025 GMC Sierra 2500/3500 HD Trim Levels
Pro
Starting at $69,198- 6.6L V8 Gasoline Engine
- Allison® 10-Speed Automatic Transmission
- Trailering Package, Trailering Mirrors & Trailer Brake Controller
- Wireless Apple CarPlay® & Android Auto™ Compatibility
SLE
Starting at $74,198- 17-inch Machined Aluminum Wheels (2500 SRW Model)
- 13.4-inch Centre Touchscreen
- 12.3-inch Digital Driver Information Centre
- Traction Select System with Tow/Haul Mode
SLT
Starting at $89,098- 18-inch Machined Aluminum Wheels (SRW Models Only)
- Heated 10-way Power Front Seats with Lumbar Adjustability
- Heated Steering Wheel
- ProGrade® Trailering System with In-Vehicle Trailering App
AT4
Starting at $100,798- Exclusive 20-inch Gloss-Black Aluminum Wheels with available BFGoodrich® Off-road Tires
- Heated and Ventilated Perforated Front Leather Seating Surfaces
- Off-Road Suspension Package with Twin-Tube Rancho Shocks and Skid Plates
- HD Surround Vision
Denali
Starting at $104,798- 20-inch Ultra-Bright Machined Wheels with Bright Chrome Inserts
- Denali-Exclusive Authentic Open-Pore Wood & Patterned Aluminum Trim
- Denali-Exclusive Forge Perforated Leather Seating Surfaces
- 12-Way Heated and Ventilated Power Front Seats
AT4X
Starting at $116,998- 35-inch Goodyear® Territory MT Tires
- Factory-Installed 1.5-inch Suspension Lift
- Rear Electronic-Locking Differential
- Larger Steel Transfer Case Skid Plate & Front Aluminum Skid Plate
Denali Ultimate
Starting at $129,898- Duramax 6.6L Turbo-Diesel V8 Engine
- Signature Vader Chrome Grille with High Gloss Black Surround
- Exclusive Full-Grain Leather 16-way Power Front Seats with Massage Feature
- 12-Speaker Bose Premium Series with Centerpoint Surround Sound
Shop the 2025 GMC Sierra 2500/3500 HD at Blenheim Chevrolet
Looking to drive home a stunning 2025 GMC Sierra 2500 or 3500 HD? Contact us at Blenheim Chevrolet to begin the purchase process or enlist the help of our friendly associates in exploring the latest Sierra in even more detail. We look forward to assisting you every step of the way and invite you to book your test drive or visit our showroom here in Blenheim, Ontario.