XL 2026 Automatic Gasoline GMC Yukon XL 2026 Customs card, Al Jomaih import Cash and installments available Engines and Performance: Engine 5.3L capacity: 8 cylinders, producing 355 horsepower. Engine Transmission: 10-speed automatic. Exterior Design and Dimensions: Length: The XL version offers significantly more space for third-row passengers and luggage. Wheels: 20" Technology and Interior: Infotainment Screen: A huge 16.8-inch vertical central screen with integrated Google services. Dashboard: An 11-inch digital screen for the driver. Sound System: Premium Bose system Rear Entertainment: 12.6-inch LCD screens. Autonomous Driving: Super Cruise hands-free driving technology available. Safety and Security: Standard "GMC Pro Safety" package including automatic braking, forward collision alert, and lane keeping assist.