The GMC Yukon XL offers a top of the line drivetrain on costly higher trim levels, however seating space and other drivability qualities fall short. GM’s superb 6.2-liter V-8 has controlled higher trim levels of the Yukon and Yukon XL for various years. It’s strong, with instantaneous accelerator reaction. Press the gas pedal and the drivetrain launches nearly 6,000 pounds of SUV with gratifying alacrity. And with 420 pull and 460 pounds-feet of torque, the engine backs up that initial reaction with solid, persistent power at any rpm. Locate the best lease deals on work trucks like the GMC, in New York at Signature Auto Group. The transmission — a new 10- speed automatic that arrived only one model year ago — helps a great deal. In an era where transmissions have consistently increasing gear checks however unearth basic tasks (like downshifting without gear chasing), GM’s 10-speed answers the call immediately. It upshifts easily and downshifts — finding the correct gear — as soon as you call for passing force. Crush the pedal a little or push it to the floor and the 10-speed downshifts in half the time it takes a few automatics we’ve evaluated. Bravo. The Yukon XL’s joined EPA-estimated mileage is in the high teenagers with either drivetrain, however GM prescribes premium fuel with the 6.2-liter V8. That costs nearly 24 percent more for every gallon as of this composition. Signature Auto Group in Bay Ridge, Brooklyn offers the most reduced cost on the newest lease specials in New York.