Price Includes Added Accessories Plus Gooseneck / 5th Wheel Prep Package | Switch, High Idle Control | 3 Years Sirius XM | LPO - Black Badging Package | AT4 Premium Plus Package
The 2026 GMC Sierra 2500HD AT4 is a purpose-built heavy-duty truck for those who demand serious capability without sacrificing comfort or technology. Powered by the legendary 6.6L Duramax Diesel paired with a 4WD automatic drivetrain, this Crew Cab arrives in Summit White with a Jet Black interior and it's a factory order arriving soon, meaning you can secure exactly what you want before it hits the lot.

- 6.6L 8-cylinder Diesel engine with 4WD for maximum towing and hauling performance
- AT4 off-road package featuring Red recovery hooks, auto-locking rear differential, and Digital Variable Steering Assist
- GMC MultiPro Tailgate with six functional load/access configurations a standout feature for work and recreation
- Dual-zone automatic climate control, 10-way power seats for both driver and passenger, heated second-row outboard seats, and a heated steering wheel for year-round comfort
- Advanced trailering suite including Trailer Side Blind Zone Alert, electronic trailer sway control, and massive power-folding/extending vertical trailering mirrors
- Front and Rear Park Assist, Rear Cross Traffic Alert, StabiliTrak with Proactive Roll Avoidance for confident maneuvering
- Remote vehicle starter, driver memory presets, and rain-sensing wipers for effortless daily use
- Up-level Rear Seat Storage Package with full under-seat storage, fold-out armrest, and seatback pockets ideal for a working crew

Ready to make this Sierra yours before it arrives? Reserve your factory order today, start your purchase online, or contact our team at Birchwood Chevrolet Buick GMC with any questions. You can also book an appointment to connect with a product advisor. Explore your options anytime at birchwoodchevrolet.ca.
See three brands under one roof at Birchwood Chevrolet Buick GMC the only place in Winnipeg where you can compare GMC, Chevrolet, and Buick all in one visit. Save yourself some time, see a great selection, and learn everything you need to know.

Your Experience is Everything at Birchwood Chevrolet Buick GMC.

Click, call (204) 837-5811, or visit Birchwood Chevrolet Buick GMC at the Birchwood Auto Park, 3965 Portage Avenue West at the Perimeter.

Dealer Permit #4240.
Dealer permit #4240