The 2026 GMC Sierra 1500 AT4 Crew Cab 4x4 is built for drivers who want capability, luxury, and cutting-edge technology in one rugged package. Finished in bold Sterling Metallic with a premium Jet Black/Kalahari interior, this AT4 blends off-road readiness with upscale comfort everywhere you go.

Powered by the improved Duramax 3.0L Turbo-Diesel engine paired to a smooth 10-speed automatic transmission, the 2026 AT4 delivers impressive torque, refined diesel efficiency, and the strength you expect from GMC.

• Duramax 3.0L Turbo-Diesel

• 10-Speed Automatic Transmission

• Off-Road Suspension with a 2 Factory Lift & Monotube Shocks

• Skid Plates & Hill Descent Control

• 2-Speed AutoTrac Transfer Case

• Auto-Locking Rear Differential

• Trailer Brake Controller

• 120V Power Outlets (Cab & Bed)

• Goodyear Territory MT Tires (LT275/65R18)

• In-Vehicle Trailering App

The AT4 enhances every drive with premium comfort, thoughtful features, and refined craftsmanship:

• Heated & Ventilated Front Bucket Seats

• Heated Second-Row Outboard Seats

• Heated, Wrapped Steering Wheel

• Bose Premium Sound System

• Wireless Charging

• Adaptive Cruise Control

• 10-Way Power Front Seats

• Power Tilt & Telescoping Steering Column

• Driver Seat & Mirror Memory

• Premium Floor Liners

Stay connected, informed, and in control with the latest GMC digital experience:

• 13.4" GMC Premium Infotainment System Google Built-In, Navigation Ready, Bluetooth

• 12.3" Digital Driver Information Centre

• Wireless Apple CarPlay & Android Auto

• Keyless Open & Remote Start

• OnStar Basics (Up to 8 Years)

• SiriusXM Audio (Trial Included)

Equipped with advanced driver-assistance technology from GMC Pro Safety, including:

• Automatic Emergency Braking

• Forward Collision Alert

• Front Pedestrian Braking

• Lane Keep Assist with Lane Departure Warning

• IntelliBeam Auto High Beams

• Following Distance Indicator

• Rear Cross Traffic Braking

• Trailer Side Blind Zone Alert

• Safety Alert Seat

• HD Surround Vision

• Rear Pedestrian Alert

• Front & Rear Park Assist

• Teen Driver Mode

• Tire Pressure Monitoring with Tire Fill Alert

• GMC MultiPro Tailgate

• Spray-On Bedliner

• LED Headlamps, Taillamps & Fog Lamps

• LED Cargo Area Lighting

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

• Rain-Sensing Wipers

• 18" Machined Aluminum Wheels (Dark Painted Pockets)

An upgraded package that adds more convenience and functionality:

• Universal Home Remote

• Rear Sliding Power Window

• Off-Road High Clearance Steps (Dealer Installed)

• Power Sunroof

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.