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Fully redesigned for 2015, the third-generation GMC Yukon XL offers seating for up to nine and is available in SLE, SLT and Denali editions. Two- and four-wheel drive models are available. The "XL" or extra length adds significant legroom for third-row passengers and expands the cargo area by stretching the regular GMC Yukon's overall length by approximately 20 inches.
Like the standard Yukon, the Yukon XL's front fascia is marked by a massive horizontal grille with oversized headlamp assemblies, LED lights and a broad hood. Along the side lines this SUV features deeply arched wheel wells, multiple character lines and rocker panel trim. Retractable door assist steps are included. At the rear, this SUV has an embedded upper spoiler, a power liftgate and two chrome exhaust finishers. Denali editions add extensive chrome and brightwork from the grille to the rear bumper.
The third-generation Yukon XL offers the same powertrain arrangement as the standard wheelbase model. A 5.3 liter V8 engine is paired with a six-speed automatic transmission and makes 355 horsepower and 383 pound-feet of torque. This model is EPA-rated at 16/23 mpg city/highway. The Yukon XL Denali comes equipped with a 6.2-liter V8 engine making 420 horsepower and 460 pound-feet of torque, and is mated to an eight-speed automatic transmission. This model is EPA-rated at 15/22 mpg city/highway.
The GMC Yukon XL offers room for up to nine. Standard equipment includes 18-inch aluminum wheels with all-season tires, luggage rack side rails and power-adjustable folding side mirrors. Inside, every model comes with a Bose premium audio system, GMC's IntelliLink infotainment system, a 110-volt outlet, power accessories, tri-zone climate control and GM's OnStar telematics system with a 4G LTE Wi-Fi hot spot. Denali editions bring in larger wheels, a hands-free liftgate, a leather interior, an upgraded infotainment system and an available rear-seat entertainment system.
Besides offering 10 extra inches of third-row legroom over the standard Yukon, the Yukon XL expands the storage compartment by offering 38.9 cubic feet of storage space behind the third-row seat, 76.7 cubic feet with the third-row folded and 121.1 cubic feet behind the first row. This model has a towing capacity ranging from 6,000 to 8,100 pounds.
Competing models include the Ford Expedition, Nissan Armada and Toyota Sequoia. The Yukon XL Denali might be cross shopped with the Lincoln Navigator.
Both the first- and second-generation Yukon XL were offered in standard 1500 and heavy-duty 2500 editions, the latter outfitted with a larger gasoline or turbodiesel engine.
The first-generation GMC Yukon XL was sold from 2000 to 2006, and the second-generation model was built from 2007 to 2014.
Both the first- and second-generation 1500 models were powered by a 5.3-liter V8 engine paired with a four-speed automatic transmission. All first- and second-generation 2500 models offered a 6.0-liter V8 engine and were also paired with a four-speed automatic transmission. Later models acquired a six-speed automatic transmission.
All Yukon XL Denali models have been powered by a 6.2-liter V8 engine throughout this model's run.