The 2026 GMC Sierra 1500 AT4 Crew Cab 4WD combines serious off-road capability with premium refinement and advanced diesel performance. Finished in Onyx Black with a Jet Black and Kalahari interior, this AT4 is powered by the Duramax 3.0L Turbo-Diesel and equipped with the AT4 Premium and Technology Packages, making it a highly capable and well-appointed full-size pickup.

Performance & Capability

Built to handle demanding terrain, towing, and long-distance driving with confidence.

• Duramax 3.0L Turbo-Diesel Engine

• 10-Speed Automatic Transmission

• 4WD with 2-Speed Autotrac Transfer Case

• Automatic Locking Rear Differential

• AT4 Off-Road Suspension with 2" Lift and Monotube Shocks

• Skid Plates

• Hill Descent Control

• Trailer Brake Controller

• In-Vehicle Trailering App

• 120V AC Power Outlets (Instrument Panel and Cargo Bed)

Interior Comfort & Convenience

A premium AT4 cabin designed for comfort on long drives and rough terrain.

• Heated and Ventilated Front Bucket Seats

• Heated Second-Row Outboard Seats

• 10-Way Power Front Seats

• Driver Seat and Mirror Memory

• Heated Leather-Wrapped Steering Wheel

• Power Tilt and Telescoping Steering Column

• Adaptive Cruise Control

• Wireless Charging

• Bose Premium Sound System

• Premium Floor Liners

Technology & Connectivity

Advanced displays and trailering technology keep you connected and informed.

• GMC Premium Infotainment System

• 13.4" Diagonal Colour Touchscreen

• Google Built-In with Navigation Capability

• Wireless Apple CarPlay

• Wireless Android Auto

• 12.3" Digital Driver Information Centre

• OnStar Basics (Up to 8 Years)

• SiriusXM Audio (Trial Included)

• Keyless Open and Remote Start

• Head-Up Display

• Rear Camera Mirror

• Bed View Camera

Safety & Driver Assistance

A comprehensive suite of driver-assist technologies designed to support confidence on and off the road.

• GMC Pro Safety

• Automatic Emergency Braking

• Forward Collision Alert

• Front Pedestrian Braking

• Lane Keep Assist with Lane Departure Warning

• Following Distance Indicator

• IntelliBeam Automatic High Beams

• Front and Rear Park Assist

• Trailer Side Blind Zone Alert

• Rear Cross Traffic Braking

• Rear Pedestrian Alert

• Safety Alert Seat

• HD Surround Vision

• Tire Pressure Monitoring with Tire Fill Alert

• Teen Driver Technology

Exterior Highlights

Bold AT4 styling paired with functional, trail-ready design elements.

• 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, and Fog Lamps

• Rain-Sensing Wipers

• Rear Window Defogger

• Power Sunroof

• Off-Road High-Clearance Steps

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 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.