KBB.com Brand Image Awards. Scores 22 Highway MPG and 15 City MPG! This GMC Yukon XL delivers a Gas/Ethanol V8 5.3L/323 engine powering this Automatic transmission. WHEELS, 20" X 9" (50.8 CM X 22.9 CM) POLISHED ALUMINUM, TRANSMISSION, 6-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED with overdrive, tow/haul mode and tap up/tap down shifting (STD), TRANSFER CASE, ACTIVE, 2-SPEED ELECTRONIC AUTOTRAC with rotary controls, includes neutral position for dinghy towing.. *This GMC Yukon XL Comes Equipped with These Options * SUSPENSION PACKAGE, STANDARD Increased capacity, Premium Smooth Ride with Air leveler, OPEN ROAD PACKAGE includes additional 9 months of SiriusXM Radio and NavTraffic service, (CF5) power sunroof, (U42) rear seat entertainment system and on SLT (IO6) Audio system with navigation, LICENSE PLATE FRONT MOUNTING PACKAGE, HD TRAILERING PACKAGE includes (GU6) 3.42 Axle Ratio, (JL1) Trailer brake controller, (Z85) Suspension Package and includes (NQH) transfer case, active, 2-speed with 4WD models , TRAILER BRAKE CONTROLLER, INTEGRATED, TIRES, P275/55R20 ALL-SEASON, BLACKWALL, SUNROOF, POWER, TILT-SLIDING with express-open and close and wind deflector, SLT PREFERRED EQUIPMENT GROUP Includes Standard Equipment, SEATS, SECOND ROW BUCKET, POWER, SEATS, PERFORATED, LEATHER-APPOINTED, FULL-FEATURE RECLINING BUCKET with 12-way power driver and front passenger seat adjuster, including 6 way power driver and passenger, 2 way power recline. 4 way power lumbar for driver and passenger, heat/cool with memory (no memory lumbar) (STD). * Expert Reviews!* As reported by KBB.com: If you need no-compromises hauling and towing ability, along with a no-compromises, first-rate interior, the 2015 GMC Yukon and Yukon XL are just the ticket. That goes double for the high-end Denali models. * Visit Us Today * Come in for a quick visit at S & S Best Auto Sales LLC, 2712 Auburn Way N, Auburn, WA 98002 to claim your GMC Yukon XL!