The 2025 GMC Sierra HD pickup trucks include the 2500HD and 3500HD, each offering incredible power and capability. Within these two GMC Sierra HD models, you can choose from three available body styles, two-bed lengths and five trim levels, so you’ll have no problem getting what you’re looking for in a new pickup truck. From powerful towing and hauling capabilities to innovative technology, luxurious comfort and high-tech safety systems, 2025 GMC Sierra HD pickup trucks have everything you want. Keep reading to learn more about the new GMC Sierra HD at Terra Nova GMC Buick.
Exterior
Outstanding Exterior Design
The new GMC Sierra HD pickup truck exudes a dominating presence, and credit for that goes to its bold exterior features, including the iconic chrome grille, LED projector headlamps, signature lighting, and rugged front bumper and fascia.
Six-Function MultiPro Tailgate
For added convenience, the Sierra HD comes with a six-function GMC MultiPro Tailgate that makes loading, unloading, and accessing the cargo area easier. The six available functions are:
- Primary Gate
- Primate Gate Load Stop
- Easy Access
- Full-Width Step
- Inner Gate Load Stop
- Inner Gate with Work Surface
Interior
Refined Interior Craftsmanship
As much as the new Sierra heavy-duty truck is bold on the outside, it is extremely comfortable on the inside, thanks to its premium craftsmanship achieved using the finest materials, including full-grain leather.
16-Way Power Front Seats
Get the optimum comfort with the available 16-way power driver seat and front passenger seat with the massaging feature of the all-new 2025 Sierra HD. The available adjustment features include forward, back, up, down and the ability to tilt both the seat cushion and seatbacks.
2025 GMC Sierra 2500HD & 3500HD Image Gallery
Performance
Available Engine Options
Depending on the trim option chosen, the GMC Sierra heavy-duty truck rides on either the 6.6-litre V8 gas engine or the 6.6-litre Duramax turbo-diesel engine. Both engine configurations are well-thought-out and ensure dynamic performance on even the most demanding terrains.
Advanced Trailering Technologies
To instill great confidence within drivers, especially while towing a heavy trailer, the new Sierra HD comes with advanced trailering technologies, making the task easier and seamless. These technologies include:
- ProGrade Trailering Tech
- Up to 14 available camera views
- Adaptive Cruise Control with Trailering
2025 GMC Sierra HD Engine Specifications:
| Engine Options | 6.6L V8 Gas | 6.6L Duramax Turbo-Diesel V8 |
| Horsepower | 401 | 470 |
| Torque (lb-ft) | 464 | 975 |
| Transmission | Allison 10-speed automatic | Allison 10-speed automatic |
Technology
Multiple Displays
With three displays, the new GMC Sierra heavy-duty truck promises everyone a well-informed and intuitive travel experience while keeping them connected to the outside world. These displays are:
- 13.4-inch Centre Touchscreen
- 15-inch Multicolour Head-Up Display
- 12.3-inch Colour Driver Information Centre
GMC Infotainment System
Every passenger can stay connected and entertained while driving the GMC Sierra 2500 HD and 3500 HD pickup trucks with the GMC Infotainment System. This high-tech system offers Bluetooth connectivity for audio streaming and hands-free calling, as well as wireless connectivity to connect Apple CarPlay and Android Auto.
Safety
Sierra HD Pro Safety
Every 2025 GMC Sierra HD trim level comes equipped with a comprehensive deck of active safety systems and driver-assistance technologies to make driving, as well as your on-road experience, stress-free. Some safety features to look for include:
- Forward Collision Alert
- Following Distance Indicator
- Front Pedestrian Braking
- Lane Keep Assist with Lane Departure Warning
- Lane Change Alert with Side Blind Zone Alert
- Automatic Emergency Braking
- Rear Cross Traffic Alert
- Adaptive Cruise Control
2025 GMC Sierra 2500HD & 3500HD Trim Levels
Pro
Starting at $68,032*- Adaptive Cruise Control w/ trailering
- Wireless Apple CarPlay and Android Auto
- Trailer Brake Controller
SLE
Starting at $73,032*- 17-inch machined aluminum wheels
- Traction Select System w/ Tow/Haul mode
- 13.4-inch centre touchscreen
SLT
Starting at $89,127*- Heated steering wheel
- MultiPro Tailgate
- 18-inch machined aluminum wheels w/ dark grey metallic accents
AT4
Starting at $99,632*- 15-inch Head-Up Display
- Off-Road Suspension Package
- 20-inch gloss-black aluminum wheels
Denali
Starting at $104,127*- 20-inch Ultra-Bright machined wheels
- Power sunroof
- Rear Camera Mirror
AT4X
Starting at $116,427*- 35-inch Goodyear Territory MT Tires
- 16-way heated and ventilated power front seats
- Obsidian Rush interior
Denali Ultimate
Starting at $129, 227*- Bose Premium Series Sound System
- Illuminated power assist steps
- Auxiliary trailer camera
The all-new 2025 GMC Sierra HD pickup trucks are available to shop at Terra Nova GMC Buick in St. John’s, Newfoundland and Labrador. If you would like to learn more about the 2025 GMC Sierra 2500HD or 3500HD, please visit our dealership to speak with our knowledgeable product specialist, today. To get a feel for the power and capability of a new GMC Sierra HD pickup truck, we encourage you to schedule a test drive to take it out on the road and experience it yourself.