Scores 27 Highway MPG and 22 City MPG! Carfax One-Owner Vehicle. This GMC Sierra 1500 boasts a Turbocharged Diesel I6 3.0L/ engine powering this Automatic transmission. TRANSMISSION, 10-SPEED AUTOMATIC WITH ELECTRONIC PRECISION SHIFT, ELECTRONICALLY CONTROLLED with overdrive, tow/haul mode and steering column paddle shifters. Includes Cruise Grade Braking and Powertrain Grade Braking, SUPER CRUISE (Subscription required) a hands-free driver assistance feature for use on compatible roads, includes automatic lane changing and trailering capability (Includes (UGN) Enhanced Automatic Emergency Braking.), ONYX BLACK.*This GMC Sierra 1500 Features the Following Options *LPO, REAR UNDERSEAT STORAGE, COMPOSITE STORAGE BIN Crew Cab includes lockable lid, (dealer-installed), ENGINE, DURAMAX 3.0L TURBO-DIESEL I6 (305 hp [227 kW] @ 3750 rpm, 495 lb-ft of torque [671 Nm] @ 2750 rpm) (Includes (KW5) 220-amp alternator and (K05) engine block heater.), ALPINE UMBER, FORGE PERFORATED LEATHER SEAT TRIM, Wipers, front rain-sensing, Windows, power rear, express down, Windows, power front, drivers express up/down, Window, power, rear sliding with rear defogger, Window, power front, passenger express up/down, Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.), Wheelhouse liners, rear (Deleted with (E3Z) Carbon Fiber Composite Bed.).*Feel Confident About Your Choice *According to Carfax's history report: Carfax One-Owner Vehicle, No Damage Reported, No Accidents Reported, 8 Service Records.