Scores 19 Highway MPG and 15 City MPG! This GMC Sierra 1500 delivers a Gas V8 5.3L/325 engine powering this Automatic transmission. WHEELS, 20 POLISHED ALUMINUM WHEELS, TRANSMISSION, 10-SPEED AUTOMATIC, (COLUMN SHIFTER) ELECTRONICALLY CONTROLLED, TIRES, 275/60R20 ALL-SEASON, BLACKWALL.*This GMC Sierra 1500 Comes Equipped with These Options *SUSPENSION PACKAGE, HIGH CAPACITY, MAX TRAILERING PACKAGE , TIRE, SPARE 255/80R17SL ALL-SEASON, BLACKWALL, SUMMIT WHITE, SLT PREFERRED EQUIPMENT GROUP, SEATS, FRONT 40/20/40 SPLIT-BENCH, REAR AXLE, 3.42 RATIO, PROGRADE TRAILERING SYSTEM, LICENSE PLATE KIT, FRONT, JET BLACK, PERFORATED LEATHER-APPOINTED FRONT OUTBOARD SEAT TRIM.