New 2026 GMC Yukon AT4 Ultimate

Meet the 2026 Yukon AT4 Ultimate — Ontario’s most capable luxury SUV. Diesel power, Super Cruise, and full off‑road engineering come together in a vehicle built for families, professionals, and cottage‑country life.

The 2026 GMC Yukon AT4 Ultimate is not just another full-size SUV. It is a premium luxury command centre built for families, professionals, cottage country travelers, business owners, and adventure seekers who want uncompromising capability, diesel efficiency, advanced technology, and first-class comfort all in one vehicle. Finished in stunning Volcanic Red Tintcoat with Obsidian Rush interior and red accents, this Yukon AT4 Ultimate delivers a road presence that turns heads from downtown Toronto to Muskoka cottage country.

For buyers across Ontario searching for a fully loaded luxury SUV with diesel power, Super Cruise technology, advanced towing capability, and premium off-road performance, the Yukon AT4 Ultimate stands in a class of its own.

Built to Dominate Ontario Roads in Every Season

Under the hood is the legendary Duramax 3.0L Turbo-Diesel engine producing 305 horsepower and an incredible 495 lb-ft of torque. Paired with a smooth 10-speed automatic transmission and GMC’s advanced Active Response 4WD system, the Yukon AT4 Ultimate delivers effortless highway cruising, outstanding towing capability, and impressive long-distance fuel efficiency.

Whether you're towing a trailer through Northern Ontario, navigating winter roads in Durham Region, or taking the family to Blue Mountain for the weekend, this Yukon is engineered to handle Canadian conditions with confidence.

Performance and capability highlights include:

• Magnetic Ride Control Suspension

• Air Ride Adaptive Suspension

• Electronic Limited Slip Differential

• Autotrac Two-Speed Transfer Case

• Hill Descent Control

• Max Trailering Package

• ProGrade Trailering System

• Trailer Brake Controller

• Blind Zone Steering Assist with Trailering

• Hitch View with Image Adjustment

• Front Red Recovery Hooks

• Front Skid Plate Protection

• Heavy-Duty Air Filter

• 250-Amp Alternator

• Engine Block Heater

AT4 Ultimate Styling That Commands Attention

The Yukon AT4 Ultimate blends rugged capability with premium luxury styling unlike anything else on the road.

This Yukon features:

• Volcanic Red Tintcoat Exterior

• 20" Talos Bronze Metallic Wheels

• AT4 Black Appearance Package

• Illuminated Black GMC Emblem

• Black Nameplates

• Black Roof Rails

• LED Headlamps and LED Fog Lamps

• Power Retractable Assist Steps with LED Lighting

• Panoramic Dual-Pane Power Sunroof

The combination of aggressive AT4 styling and upscale luxury detailing creates a vehicle that feels equally at home pulling into a downtown hotel valet or heading into cottage country.

A Luxury Alternative to Escalade, Range Rover, and Imported SUVs

The 2026 Yukon AT4 Ultimate is attracting buyers from across Ontario who are shopping Cadillac Escalade, Lincoln Navigator, Jeep Grand Wagoneer, Toyota Sequoia, Lexus GX, Land Rover Range Rover, and even high-end European luxury SUVs.

What makes this Yukon stand out?

• Duramax diesel efficiency with incredible torque

• True body-on-frame SUV capability

• Advanced towing technology

• Hands-free Super Cruise driving

• Premium off-road engineering

• Massive digital cockpit

• Luxury interior craftsmanship

• GMC exclusivity and road presence

For Ontario buyers looking for a luxury SUV that can handle towing, winter driving, family road trips, and executive-level comfort all at once, the Yukon AT4 Ultimate delivers a rare combination few SUVs can match.

First-Class Interior Luxury

Inside, the Yukon AT4 Ultimate feels more private jet than SUV.

Premium interior features include:

• Full Grain Leather Seating

• Heated and Ventilated Front Seats

• Front Seat Massage Function

• Heated Second Row Seats

• Power Second Row Bucket Seats

• Power Folding Third Row Seating

• Tri-Zone Automatic Climate Control

• Heated Steering Wheel

• Power Sliding Centre Console

• Memory Seating and Steering Column

• Panoramic Power Sunroof

• Bose Surround Audio with Centerpoint

• Wireless Phone Projection

• Wireless Charging

• Rear Seat Media System with Dual HD Screens

Every surface, switch, and material has been designed to create a premium driving environment for both driver and passengers.

Cutting-Edge Technology and Safety

The 2026 Yukon AT4 Ultimate is loaded with GMC’s most advanced technology systems.

Technology highlights include:

• Super Cruise Hands-Free Driving

• Massive GMC Digital Cockpit

• Head-Up Display

• HD Surround Vision

• Rear Camera Mirror

• Adaptive Cruise Control

• Enhanced Automatic Parking Assist

• Driver Attention Assist

• Google Built-In Connectivity

• 5G WiFi Hotspot Capability

• Traffic Sign Recognition

• Rear Cross Traffic Braking

• Reverse Automatic Braking

• Side Bicyclist Alert

• Forward Collision Alert

• Front Pedestrian & Cyclist Braking

We Deliver Across Ontario

Located at Boyer Chevrolet Buick GMC Ajax, we work with buyers across Ontario every day. Whether you are located in Toronto, Ottawa, London, Windsor, Sudbury, Kingston, Barrie, Muskoka, Niagara, or Northern Ontario, we can assist with delivery options and make your purchase experience simple and convenient.

High-demand vehicles like the Yukon AT4 Ultimate attract buyers from all over the province, and this configuration is one of the most desirable combinations GMC builds.