The 2026 GMC Yukon Denali Ultimate specs centre on a 6.2-litre V8 making 420 hp and 460 lb-ft with a 10-speed automatic, or an optional 3.0-litre Duramax diesel making 305 hp and 495 lb-ft. It is the most luxurious Yukon trim, with Air Ride Adaptive Suspension, seating for up to eight and a tow rating around 8,000 lb.
Quick answer: 6.2L V8, 420 hp, 460 lb-ft, 10-speed automatic, 4WD, up to eight seats and a 16.8-inch infotainment screen with Google built-in. Guide Auto lists the 2026 Yukon range at 9.7 to 17.1 L/100 km, and the Denali Ultimate is at the thirsty end with the V8.
2026 GMC Yukon Denali Ultimate specs at a glance
Engine figures are GM’s published numbers. Cargo and towing details vary by body length and drivetrain, so confirm them on the Canadian GMC build sheet, and ask a dealer whether the Denali Ultimate is available in Canada in your region.
| Item | 2026 Yukon Denali Ultimate |
|---|---|
| Standard engine | 6.2L EcoTec3 V8, 420 hp, 460 lb-ft |
| Optional engine | 3.0L Duramax turbo-diesel, 305 hp, 495 lb-ft |
| Transmission | 10-speed automatic |
| Drivetrain | Active Response 4WD |
| Suspension | Air Ride Adaptive Suspension |
| Length | about 210 in (standard Yukon) |
| Seating | Up to 8 (captain’s chairs optional) |
| Towing | around 8,000+ lb, varies by engine and body |
Engine and drivetrain
The 6.2L V8 delivers strong passing power and towing muscle, while the diesel trades some peak power for more torque and lower consumption. The 10-speed automatic and Active Response 4WD are shared across the range.
Air Ride Adaptive Suspension adjusts ride height and damping, which helps comfort, hitching and loading.
Towing
Figures quoted for this trim are about 8,200 lb. Actual tow ratings differ by engine, axle ratio and body length, so check the label and owner’s manual for your exact vehicle. Compare with other options in our SUV towing capacity chart.
Size, seating and cargo
The standard-wheelbase Yukon is about 210 in long. GM’s published cargo figures are roughly 25.5 cu ft behind the third row and about 123 cu ft maximum, while the longer Yukon XL offers far more, up to roughly 145 cu ft. Confirm the body style before you compare numbers.
Interior and tech
The Denali Ultimate adds full-grain leather, Woodland Mahogany trim, heated and ventilated seats, a panoramic sunroof and a power-sliding centre console. A 16.8-inch GMC infotainment screen with Google built-in is part of the range.
Safety and driver assistance
GMC lists driver-assistance features such as automatic emergency braking, lane keeping and HD surround-view cameras. Super Cruise hands-free driving and Night Vision are available on higher trims; availability in Canada should be confirmed with a dealer. These systems assist the driver and do not replace attention.
Fuel economy and who it suits
Guide Auto lists the 2026 Yukon range at 9.7 to 17.1 L/100 km. The V8 is at the high end, while the diesel is the efficiency choice. Prices vary by region and build, so check the current listing instead of relying on a number quoted here.
It suits buyers who want a quiet, big luxury SUV for family trips and trailers. For rivals see our 2025 Chevrolet Suburban specs and the 2025 Nissan Armada specs.
Frequently asked questions
What engine does the 2026 GMC Yukon Denali Ultimate have?
The standard engine is a 6.2-litre EcoTec3 V8 making 420 hp and 460 lb-ft. A 3.0-litre Duramax diesel with 305 hp and 495 lb-ft is also offered.
How many people does the Yukon Denali Ultimate seat?
It seats up to eight, with captain’s chairs available in the second row.
How much can the Yukon Denali Ultimate tow?
Figures around 8,000 lb are quoted, but the rating varies by engine, axle ratio and body length. Check the label on the vehicle.
What is the fuel consumption of the 2026 Yukon in Canada?
Guide Auto lists 9.7 to 17.1 L/100 km for the 2026 Yukon range, with the diesel at the efficient end.
Is the Yukon Denali Ultimate available with Super Cruise?
Super Cruise is available on higher Yukon trims, but check with a dealer that it is offered on Canadian builds.
What is the difference between the Yukon and the Yukon XL?
The XL is a longer body with much more cargo space. Check the body style when comparing cargo and towing figures.
