The GMC Yukon XL Denali 6.2 V8 4WD Automatic represents the pinnacle of GMC’s full-size SUV offerings from the 2020 to 2024 model years. Positioned as the most luxurious and powerful variant of the fourth-generation Yukon XL (introduced for 2021, replacing the previous generation that began in 2015), the Denali 6.2 V8 catered to buyers seeking substantial towing capacity, spaciousness, and premium features. It builds upon the extended-length Yukon XL platform, offering significantly more cargo volume behind the third row compared to the standard Yukon. This model competed directly with luxury SUVs like the Cadillac Escalade, Lincoln Navigator, and Jeep Wagoneer.
Technical Specifications
| Brand | GMC |
| Model | Yukon XL |
| Generation | Yukon XL V |
| Type (Engine) | Denali 6.2 V8 (426 Hp) 4WD Automatic |
| Start of production | July, 2020 |
| End of production | 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 7 |
| Doors | 5 |
| Fuel consumption (urban) | 16.8 l/100 km (14 US mpg, 16.8 UK mpg, 6 km/l) |
| Fuel consumption (extra urban) | 12.4 l/100 km (19 US mpg, 22.8 UK mpg, 8.1 km/l) |
| Fuel consumption (combined) | 14.7 l/100 km (16 US mpg, 19.2 UK mpg, 6.8 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Power | 426 Hp @ 5600 rpm |
| Torque | 623 Nm @ 4100 rpm (459.5 lb.-ft. @ 4100 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L86 |
| Engine displacement | 6162 cm3 (376.03 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.25 mm (4.06 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Number of valves per cylinder | 2 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV, VVT |
| Engine oil capacity | 7.6 l (8.03 US qt | 6.69 UK qt) |
| Coolant capacity | 14.3 l (15.11 US qt | 12.58 UK qt) |
| Trunk (boot) space – minimum | 1175 l (41.49 cu. ft.) |
| Trunk (boot) space – maximum | 4097 l (144.68 cu. ft.) |
| Permitted trailer load with brakes (12%) | 3583 kg (7899.16 lbs.) |
| Length | 5721 mm (225.24 in.) |
| Width | 2058 mm (81.02 in.) |
| Height | 1943 mm (76.5 in.) |
| Wheelbase | 3407 mm (134.13 in.) |
| Front track | 1741 mm (68.54 in.) |
| Rear track | 1734 mm (68.27 in.) |
| Minimum turning circle | 12.9-13.2 m (42.32 – 43.31 ft.) |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears and type of gearbox | 10 gears, automatic transmission Hydra-Matic |
| Front suspension | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 275/65 R20; 275/50 R22 |
| Wheel rims size | 20; 22 |
Powertrain & Engine Architecture
At the heart of the Yukon XL Denali 6.2 is the GM L86 6.2-liter naturally aspirated V8 engine. This engine is a member of GM’s Small Block engine family, utilizing aluminum cylinder heads and a cast iron block. It features direct injection, cylinder deactivation (Dynamic Fuel Management), and variable valve timing (VVT) to optimize both power and fuel efficiency. The L86 produces 426 horsepower at 5600 rpm and 459.5 lb-ft of torque at 4100 rpm. The engine is mated to a 10-speed Hydra-Matic automatic transmission, a sophisticated unit designed for smooth shifting and efficient operation. This transmission allows for a wide gear ratio spread, contributing to both acceleration and highway cruising efficiency. The 4WD system is an electronically controlled, automatic system that engages the front wheels when rear wheel slip is detected.
Driving Characteristics
The Yukon XL Denali 6.2 V8 delivers strong acceleration and effortless cruising. The 6.2-liter V8 provides ample power for towing and hauling, making it a capable workhorse. While not as quick as some of the lighter, more performance-oriented SUVs, the Yukon XL Denali feels remarkably composed given its size and weight. The 10-speed transmission is generally smooth and responsive, although some drivers have noted occasional hunting for the right gear in certain situations. Compared to the 5.3-liter V8 offered in lower trims, the 6.2-liter provides a noticeable increase in power and torque, resulting in quicker acceleration and more confident passing maneuvers. The automatic transmission, while convenient, doesn’t offer the same level of driver engagement as a manual transmission (which wasn’t available on this model).
Equipment & Trim Levels
The Denali trim is the highest available on the Yukon XL, and as such, it comes standard with a comprehensive list of luxury features. Standard equipment includes leather upholstery, heated and ventilated front seats, a premium Bose audio system, a large touchscreen infotainment system with navigation, a power-folding rear seat, adaptive cruise control, lane keep assist, and automatic emergency braking. Optional extras included a rear-seat entertainment system, a panoramic sunroof, and upgraded interior trim materials. The Denali trim also features unique exterior styling cues, such as a distinctive grille and chrome accents.
Chassis & Braking
The Yukon XL rides on a fully boxed frame, providing a solid and stable platform. The suspension consists of independent coil springs in the front and an independent multi-link suspension in the rear. This setup provides a comfortable ride, even on rough roads. All four wheels are equipped with ventilated disc brakes, providing ample stopping power. The Denali trim includes standard features like Magnetic Ride Control, an adaptive damping system that adjusts the suspension in real-time to optimize ride comfort and handling. The rear axle ratio is optimized for towing, contributing to the Yukon XL’s impressive 7,899 lb towing capacity.
Market Reception & Comparison
The Yukon XL Denali 6.2 V8 was generally well-received by automotive critics. Reviewers praised its spacious interior, luxurious features, and powerful engine. However, its fuel economy was often criticized, as expected for a vehicle of this size and capability. Compared to the 5.3-liter V8 Yukon XL, the Denali 6.2 offered significantly more power and a more refined driving experience, but at a higher price point. The Denali also offered a more luxurious interior and more standard features than the lower trims. Against competitors like the Cadillac Escalade and Lincoln Navigator, the Yukon XL Denali held its own, offering a compelling combination of space, luxury, and capability.
Legacy
The L86 6.2-liter V8 engine has proven to be a relatively reliable powertrain, although regular maintenance is crucial. Common issues reported by owners include oil consumption and occasional sensor failures. The 10-speed transmission has also proven to be generally reliable, but some owners have reported issues with shifting smoothness. On the used car market, the Yukon XL Denali 6.2 V8 commands a premium price due to its desirable features and powerful engine. It remains a popular choice for buyers seeking a large, luxurious, and capable SUV.
