Previous versions of the GMC Sierra HD have changed the heavy-duty truck class in untold ways. Our manufacturing partner has shown that refinement and performance in this specialized corner of the truck segment are not mutually exclusive. The 2026 GMC Sierra HD is highly configurable across body styles and features a broad range of powertrains capable of towing some of the heaviest loads in its class. Follow along with Pacific Chevrolet while we take a closer look at the latest member of the Sierra HD family.
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New GMC Sierra HD Inventory
New and popular vehicles at competitive prices.
Disclaimer: Price does not include taxes and licensing fees.
Design
Passenger-Friendly Cabin
The 2026 Sierra Heavy Duty delivers best-in-class front headroom and legroom in the Crew Cab, creating a roomy environment for both driver and passengers. With 1,093 mm (43.03 in) of front headroom and 1,131 mm (44.53 in) of front legroom, tall occupants can travel long distances in comfort.
Refined Interior Appointments
Experience next-level comfort in the 2026 GMC Sierra HD with available best-in-class 16-way power-adjustable front seats. Customizable positioning and available massage functionality help you stay comfortable and refreshed, even during extended drives.
Exterior Convenience
The 2026 GMC Sierra HD features the industry’s first six-function MultiPro Tailgate, designed to simplify tough tasks. Thoughtfully engineered to enhance access, loading, and unloading, it remains one of the most adaptable tailgate systems available.
Performance
Robust Output
The 2026 GMC Sierra HD lineup can be equipped with one of two available engine options. Most trims employ a naturally aspirated 6.6-litre V-8 making 401 horsepower and 464 pound-feet of torque. Customers requiring more specialized performance can choose the Duramax 6.6-litre turbo-diesel V-8 that turns out 475 horsepower and 975 pound-feet of torque.
Towing Support
When the Sierra HD is properly equipped, it can pull up to 16,329 kg (36,000 lbs.). Beyond simply using brute force to move all that weight, the 2026 Sierra HD includes the automaker’s ProGrade Trailering technology. This hard-working suite includes integrated features that make hitching and towing easier, while Adaptive Cruise Control helps account for added weight, drag, and braking demands when hauling a trailer.
Technology
Advanced Connectivity
Most 2026 GMC Sierra HD trucks are equipped with a 13.4-inch touchscreen that is home to the native GMC infotainment system. Drivers and passengers can mirror their phones on the touchscreen using the Apple CarPlay and Android Auto app suites. Enhanced connectivity with certain Google products is also available with a subscription.
Advanced Features
An available 15-inch diagonal multicolour head-up display in the 2026 GMC Sierra HD projects key driving information directly onto the windshield. Stay informed on navigation, speed, and vehicle data without taking your focus off the road.
Safety
Every 2026 GMC Sierra HD comes equipped with a comprehensive set of driver-assistance technologies designed to support safer driving and trailering. Pro Safety includes:
- Forward Collision Alert
- Following Distance Indicator
- Front Pedestrian Braking
- IntelliBeam
- Lane Departure Warning
- Automatic Emergency Braking
2026 Sierra HD Trim Grades
Pro
Starting at $69,333*
Details:
Key Features:
- Wireless smartphone compatibility
- Trailering package, mirrors, and brake controller
- Available Adaptive Cruise Control
SLE
Starting at $77,833*
Details:
Key Features:
- 13.4-inch touchscreen
- Traction Select System
- 17-inch aluminum wheels
SLT
Starting at $92,233*
Details:
Key Features:
- 10-way adjustable front seats
- Heated Steering
- 18-inch aluminum wheels
AT4
Starting at $100,933*
Details:
Key Features:
- 20-inch wheels
- Off-road suspension
- HD Surround Vision
Denali
Starting at $104,933*
Details:
Key Features:
- 20-inch wheels
- Trim-exclusive interior
- Heated/ventilated front seats
AT4X
Starting at $117,133*
Details:
Key Features:
- 1.5-inch lift kit
- 35-inch M/T tires
- Heated front seats
Denali Ultimate
Starting at $130.033*
Details:
Key Features:
- Turbo-Diesel V-8
- 20-inch aluminum wheels
- Illuminated power assist steps
Now is an excellent time to visit the Pacific Chevrolet showroom to take a closer look at the 2026 GMC Sierra HD. Make an appointment with one of our product experts today if you would like to take a test drive or begin the pre-ordering process to bring one home as soon as possible. Once you finish working with our team to outfit your new truck, don’t forget to stop by the service department to schedule its first round of recommended maintenance.