New 2026 GMC Sierra 3500HD

There is a certain satisfaction in driving a heavy-duty truck that feels every bit as capable as it looks, and this 2026 GMC Sierra 3500HD SLT Crew Cab 4WD delivers that feeling without giving up everyday comfort. Its 6.6L Duramax V8 turbo diesel is paired with a 10-speed automatic, while the X31 Off-Road Package adds extra confidence for rougher roads and changing conditions. Inside, heated front seats, driver memory, dual-zone climate control, and a large digital display setup make long days behind the wheel easier to enjoy. Finished in Summit White with a Jet Black interior, this Sierra has the clean, professional look that suits everything from a worksite to a weekend away from Prince George, BC.

Performance and Mechanical

The Duramax diesel gives this Sierra the serious foundation expected from a 3500HD, while X31 equipment adds suspension and underbody protection for tougher terrain.

• 6.6L Duramax V8 turbo diesel
• 10-speed automatic transmission
• 4-wheel drive
• X31 Off-Road Package
• Off-road suspension
• Twin-tube Rancho shocks
• Hill Descent Control
• Skid plates
• Autotrac 2-speed transfer case
• Automatic locking rear diff
• Digital Variable Steering
• Trailer brake controller
• Trailering Package
• Trailer sway control
• Hill Start Assist
• 3.42 rear axle ratio
• High idle switch
• Heavy-duty front springs

Connectivity and Technology

A large centre touchscreen and digital driver display keep navigation, vehicle information, and phone features easy to see. Hitch View and the in-vehicle trailering app are especially useful when towing is part of the day.

• 13.4-inch colour touchscreen
• Google built-in
• Navigation capability
• Wireless Apple CarPlay
• Wireless Android Auto
• Bluetooth
• 12.3-inch driver info centre
• Hitch Guidance with Hitch View
• In-vehicle trailering app
• Remote start
• 120V instrument panel outlet
• 120V cargo bed outlet

Interior

The SLT cabin gives this heavy-duty Sierra a more polished feel, with heated seating and driver memory adding comfort you will appreciate over long days and cold mornings.

• Jet Black interior
• Heated front seats
• Heated steering wheel
• 10-way power driver seat
• Driver seat and mirror memory
• Dual-zone automatic climate
• Auto-dimming rearview mirror
• Rear window defogger
• All-weather floor liners

Exterior

Summit White keeps the truck looking clean and professional, while LED lighting and power-folding trailering mirrors add a more upscale finish. BedStep access and the EZ-Lift tailgate make working around the box easier.

• Summit White
• LED projector headlamps
• LED fog lamps
• LED cargo bed lighting
• Power-folding trailering mirrors
• Heated trailering mirrors
• Perimeter mirror lighting
• EZ-Lift power-release tailgate
• Integrated BedStep
• Rear wheelhouse liners
• Rain-sensing wipers
• 18-inch aluminum wheels
• All-terrain tires
• 6.8-foot box

Safety and Security

Sierra HD Pro Safety adds useful driver-assistance features for everyday travel, while the rear camera helps with visibility around a truck this size.

• Automatic Emergency Braking
• Forward Collision Alert
• Front Pedestrian Braking
• Lane Departure Warning
• Following Distance Indicator
• HD Rear Vision Camera
• IntelliBeam auto high beams
• Rear Seat ReminderThis Sierra 3500HD SLT is for someone who needs real capability but still wants to enjoy the truck when the work is done. The Duramax diesel, X31 hardware, Crew Cab, and trailering equipment give it the muscle for demanding days, while the heated cabin and modern technology make it a comfortable place to spend the miles in between. It is a strong, well-rounded heavy-duty truck that feels ready for whatever comes next. Wood Wheaton has this 2026 GMC Sierra 3500HD SLT ready for its next owner.