There are times when the task at hand calls for a big truck, and they don’t get much bigger or tougher than the 2025 GMC Sierra Heavy Duty. Whether you need the versatile Sierra 2500 or the mighty Sierra 3500, either offers you the strength and capability to handle most any job. With gas and diesel options, and seven incredible trim levels, there’s a Sierra HD which can rise to meet your needs. Join the truck experts here at Buist Motor Products as we take a closer look at the 2025 Sierra HD.
Exterior
MultiPro Tailgate
The 2025 GMC Sierra HD is available with the innovative GMC MultiPro Tailgate, providing your truck bed with ease of access and flexibility. The tailgate can be easily adjusted to extend the bed for longer loads, or even act as a sturdy work-surface.
Projector Headlights
The 2024 Sierra HD comes equipped with LED projector headlights which improve visibility on the road, and provide a handy light source at the work site. Animated lighting sequences enhance the exterior look of the truck, because even a heavy duty truck should turn heads.
Interior
Power Front Seats
After a hard day at work, you deserve a relaxing drive home. The 2025 GMC Sierra HD has an available, best-in-class, 16-way power front seat which allows you to adjust it for perfect comfort. It even comes with a massage feature. You can further upgrade the front seating to be heated to help beat the winter chill.
Spacious Interior
The 2025 GMC Sierra HD offers a best-in-class Crew Cab, giving every passenger ample head and leg room. Coupled with premium interior features, and you have the kind of cab everyone will be asking for a ride home in.
2025 GMC Sierra HD Image Gallery





Performance & Capability
Incredible Towing Power
When equipped with the available 6.6L Duramax Turbo Diesel V8 engine, the 2025 GMC Sierra HD offers truly world-class towing capability. With 470 horsepower and an astounding 975 lb.-ft. of torque, it can pull up to 36,000 lbs. Load up an elephant with you before you hit the highway. Heck, take two.
Blaze a Trail
You don’t have to stick to the paved roads in the 2025 Sierra HD. The AT4 and AT4X are both equipped with off-roading enhancements such as off-road suspension, improved ground clearance and upgraded underbody protection. Go where you want, when you want.
2025 GMC Sierra HD Engine Capabilities:
Engine Options: | 6.6L V8 | 6.6L Duramax Turbo-Diesel V8 |
Horsepower | 401 | 470 |
Torque (ft.-lb.) | 464 | 975 |
Towing Capacity (kg / lb) | 10,010 / 22,070 | 16,329 / 36,000 |
Transmission | Allison 10-Speed Automatic | Allison 10-Speed Automatic |
Technology
Trailering System
The 2025 GMC Sierra HD offers an available Prograde™ Trailering System, giving you the ability to customize up to five trailer profiles for all your regular hauling needs. If you link it up to the myGMC app, you can control and monitor an assortment of smart systems in your trailer.
Heads Up
For 2025, the Sierra HD offers an available 15” diagonal multicolour head-up display. Keep some of the most important information you need for your drive right in your field of vision, so you can keep your eyes on the road.
Safety
Pro Safety
The 2025 Sierra HD is equipped with the GMC Pro Safety system. This advanced suite of safety features includes automatic emergency braking, forward collision alert, following distance indicator, front pedestrian braking, lane keep assist, and automatic high beams.
Hitch Guide
Make hitching up the trailer easier with the available Hitch Guidance feature for the 2025 Sierra HD. It displays a guideline in the Rear Vision Camera to help you line up hitch, and even allows you to check the trailer while driving.
2025 GMC Sierra 2500 & 3500 Trim Levels
Get Your 2025 GMC Sierra HD in Rimbey, AB
There are few trucks which can boast the power, reliability, and comfort of the 2025 GMC Sierra HD. Visit the truck team here at Buist Motor Products where we can walk you through its options, or book a test drive to try one out for yourself! Be sure you explore our latest special offers to see what may apply to your purchase. If you’re due for maintenance, our certified service team would be happy to book you in as soon as possible.