The 2026 GMC Sierra 1500 AT4 Crew Cab 4WD blends premium refinement with serious off-road capability and V8 performance. Finished in Sterling Metallic with a Jet Black and Kalahari interior, this AT4 is powered by the commanding 6.2L Ecotec3 V8 paired with a 10-speed automatic transmission, delivering strong acceleration, confident towing capability, and unmistakable presence.

Equipped with the AT4 Premium Package and Technology Package, this Sierra raises the bar for both comfort and innovation.

Engineered for rugged terrain and heavy-duty demands.

• 6.2L Ecotec3 V8 Engine

• 10-Speed Automatic Transmission

• 2-Speed Autotrac Transfer Case

• Automatic Locking Rear Differential

• AT4 Off-Road Suspension with 2" Factory Lift

• Monotube Shocks and Skid Plates

• Hill Descent Control

• Trailer Brake Controller

• 120V Power Outlet in Cargo Bed & Instrument Panel

• Active Exhaust System

Premium materials meet practical durability in the AT4 cabin.

• Heated & Ventilated Front Bucket Seats

• Heated Second-Row Outboard Seats

• 10-Way Power Front Seats

• Driver Seat & Mirror Memory

• Heated Wrapped Steering Wheel

• Power Tilt & Telescoping Steering Column

• Adaptive Cruise Control

• Wireless Charging

• Bose Premium Sound System

• Premium Floor Liners

• Power Sunroof

• Rear Sliding Power Window

• Universal Home Remote

Advanced displays and camera systems keep you informed and in control.

• 13.4" GMC Premium Infotainment Touchscreen with Google Built-In

• Wireless Apple CarPlay & Android Auto

• 12.3" Digital Driver Information Centre

• In-Vehicle Trailering App

• 15" Multicolor Head-Up Display

• Rear Camera Mirror

• Bed View Camera

• OnStar Basics (Up to 8 Years)

• SiriusXM Audio

Comprehensive GMC Pro Safety technologies provide confidence on and off the road.

• Automatic Emergency Braking

• Forward Collision Alert

• Front Pedestrian Braking

• Lane Keep Assist with Lane Departure Warning

• IntelliBeam Automatic High Beams

• Front & Rear Park Assist

• Trailer Side Blind Zone Alert

• Rear Cross Traffic Braking

• Rear Pedestrian Alert

• HD Surround Vision

• Safety Alert Seat

• Teen Driver Mode

• Tire Pressure Monitoring with Tire Fill Alert

Bold AT4 styling with functional trail-ready details.

• 20" Machined Aluminum Wheels with Carbon Grey Accents

• Goodyear Wrangler Territory MT Tires

• Spray-On Bedliner

• GMC MultiPro Tailgate

• LED Cargo Area Lighting

• Power Folding & Heated Mirrors with Driver-Side Auto-Dimming

• LED Headlamps, Tail Lamps & Fog Lamps

• Rain-Sensing Wipers

• Rear Window Defogger

With commanding V8 performance, factory lift suspension, premium interior features, and advanced technology packages, this 2026 Sierra AT4 delivers capability and refinement in equal measure.

2 Year/24,000 kilometer* Complimentary Oil Changes (2 total)

3 Year/60,000 kilometer* Base Warranty Coverage

5 Year/100,000 kilometer* Powertrain Component Warranty Coverage

5 Year/100,000 kilometer* Courtesy Transportation and 24/7 Roadside Assistance

6 Year/160,000 kilometer* Sheet Metal (Rust Through) Perforation Warranty Coverage

*Whichever Comes First.

Price Includes HD Flaps & 6 Tube Steps.

Price Includes Dealer Fee.

Price Excludes PST & GST.

Financing Options Available, Call For More Details.

*While every reasonable effort is made to ensure the accuracy of this information, we are not responsible for any error or omissions contained on these pages. Please verify any information in question with Chapman Motors Ltd.