The lineup of GMC heavy-duty trucks available at the FFUN GMC facility ranks among the most advanced and well-equipped of the current model year. Customers interested in the 2026 GMC Sierra 2500 HD or 3500 HD will take home a platform that is built to work hard on the jobsite while getting you there in comfort and style. Independent reviews have praised the 2026 Sierra HD lineup for its strong performance scores, particularly the available turbocharged diesel engine. Additionally, those same experts pointed out the variety of helpful technology to make towing easier and safer. Follow along while we take a closer look.
You Might Also Like:
Chevrolet Silverado HD
Chevrolet Silverado 1500
GMC Sierra 1500
GMC Canyon
New GMC Sierra HD Inventory
New and popular vehicles at competitive prices.
Disclaimer: Price does not include taxes and licensing fees.
Capability
Built To Perform
GMC decided to stick with the same engine menu that made previous Sierra HD model years successful. FFUN GMC customers will be able to choose between a naturally aspirated gasoline engine or a turbocharged diesel power plant.
Exceptional Towing Capacity
Both available powertrains deliver strong towing scores to 2026 Sierra HD owners. Buyers looking for the most towing capacity possible should consider trims with the Duramax diesel engine that can pull up to 16,329 kg (36,000 lbs.). Even the gasoline-powered engine can tow 10,010 kg (22,070 lbs.).
Advanced Towing Tools
Available ProGrade™ Trailering technology makes hauling simpler and smarter. Create and save up to five personalized trailer profiles and sync with the myGMC mobile app to keep tabs on select trailer functions and vehicle data from your smartphone.
Available Hitch Guidance uses the Rear Vision Camera to display alignment guidelines, helping you position your truck accurately when connecting a trailer. Add Hitch View for a closer perspective while reversing, and use the camera display while driving to keep an eye on what you’re towing.
| 6.6L V8 | 6.6L Duramax Turbo-Diesel V8 | |
| Horsepower | 401 | 470 |
| Torque (ft.-lb.) | 464 | 975 |
| Transmission | Allison 10-Speed Automatic | Allison 10-Speed Automatic |
Design
Passenger Comfort Features
Settle in with available class-leading 16-way power front seats that include a massage function for next-level comfort. Heated and ventilated front seating options help keep you warm during frigid prairie mornings and cool during long summer hauls. Additionally, top trims are available with full-grain leather seats, a unique feature among heavy-duty pickup trucks.
Work-Ready Exterior
The innovative GMC MultiPro™ Tailgate gives the 2026 GMC Sierra HD impressive versatility on the job. With six distinct configurations, it can be positioned to simplify loading, extend the bed for oversized cargo, or transform into a durable workspace whenever duty calls.
Brighten up any jobsite with the 2026 Sierra HD’s LED projector headlamps. Eye-catching animated lighting accents enhance the bold front grille design, while available LED cargo bed and perimeter lighting ensure you can load and unload with confidence, even after the sun goes down.
Technology
Advanced Digital Displays
Stay informed with an available 12.3-inch diagonal driver information centre that can be tailored to your preferences. Up front, the available 13.4-inch tablet-style centre touchscreen puts navigation, entertainment, and vehicle controls within easy reach. Wireless Apple CarPlay and Android Auto are standard across the trucks’ trim ladder.
Safety
Every 2026 Sierra HD comes standard with GMC Pro Safety, a comprehensive collection of driver-assist features designed to prevent collisions from occuring. This suite includes:
- Automatic Emergency Braking
- Forward Collision Alert
- Following Distance Indicator
- Front Pedestrian Braking
- Lane Keep Assist with Lane Departure Warning
- Automatic High Beams.
2026 Sierra HD Trim Levels
Pro
Starting at $69,342*
Details:
Highlights:
- Trailering package
- Standard 6.6-L, V-8 gas engine
- Available Cruise Control w/ Trailering
SLE
Starting at $77,842*
Details:
Highlights:
- 13.4-inch touchscreen
- Traction Select System
- 17-inch aluminum wheels
SLT
Starting at $92,242*
Details:
Highlights:
- Power front seats
- Heated steering wheel
- 18-inch aluminum wheels
AT4
Starting at $100,942*
Details:
Highlights:
- Trim-exclusive interior
- Optional off-road tires
- Adaptive cruise control
Denali
Starting at $104,942*
Details:
Highlights:
- 20-inch wheels
- Trim-exclusive interior accents
- Heated/ventilated front seats
AT4X
Starting at $117,142*
Details:
Highlights:
- Factory-installed lift kit
- 35-inch M/T tires
- Available AEV accessories
Denali Ultimate
Starting at $130,042*
Details:
Highlights:
- Standard diesel engine
- Vader Chrome grille
- Exclusive interior accents
FFUN GMC Is Your Home For Sierra HD Sales and Service
Now is an excellent time to visit the FFUN GMC showroom to take a closer look at the 2026 GMC Sierra HD lineup. Make an appointment with one of our product experts if you would like to sign up for a test drive or begin the pre-ordering process to bring one home as soon as possible. Once you complete your sales paperwork with our team, don’t forget to stop by the service department to schedule your new truck’s first round of recommended maintenance.