OPTION PACKAGESENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE (445 hp 332 kW @ 2800 rpm, 910 lb-ft of torque 1220 Nm @ 1600 rpm) Includes capped fuel fill, (K40) exhaust brake and (K05) engine block heater.), SIERRA CONVENIENCE PACKAGE includes (AQQ) Remote Keyless Entry, (A91) remote locking tailgate, (KI4) 110-volt AC power outlet, (UF2) LED cargo box lighting and (AKO) deep tinted glass; Crew Cab also includes (DL8) outside heated power-adjustable mirrors. TRAILERING EQUIPMENT Trailering hitch platform 2.5 with a 2.0 insert for HD, 7-wire harness with independent fused trailering circuits mated to a 7-way sealed connector to hook up parking lamps, backup lamps, right and left turn signals, an electric brake lead, battery and a ground, The trailer connector also includes the 4-way for use on trailers without brakes - park, brake/turn lamps and includes (JL1) trailer brake controller. BED LINER, SPRAY-ON Pickup box bed liner with GMC logo consisting of high pressure, chemically bonded, sprayed-on polyurea & polyurethane liner formulation. Liner is permanently bonded to the truck bed providing a water tight seal. The textured, non-skid surface is black in color and robotically applied. Spray-on liner covers entire bed interior surface below side rails, including tailgate, front box top rail, gage hole plugs and lower tie down loops, MIRRORS, OUTSIDE HEATED POWER-ADJUSTABLE VERTICAL CAMPER UPPER GLASS, MANUAL-FOLDING AND EXTENDING, BLACK. Includes integrated turn signal indicators consisting of 51 square inch flat mirror surface positioned over a 24.5 square inch convex mirror surface with a common head and lower convex spotter glass (convex glass is not heated and not power adjustable) and addition of Auxiliary cargo lamp for backing up (helps to see trailer when backing up with a trailer) and amber auxiliary clearance lamp and includes (DD8) auto-dimming inside rearview mirror.), WHEELS, 18 (45.7 CM) PAINTED STEEL includes 18 x 8 (45.7 cm x 20.3 cm) steel spare wheel. AUDIO SYSTEM, 7 DIAGONAL COLOR TOUCH SCREEN WITH GMC INFOTAINMENT SYSTEM, AM/FM with USB ports, auxiliary jack, Bluetooth® streaming audio for music and most phones, Pandora Internet radio and voice command pass-through to phone (STD), TRANSMISSION, ALLISON 1000 6-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED with overdrive, electronic engine grade braking and tow/haul mode, 4x4, Back-Up Camera Please confirm the accuracy of the included equipment by calling us prior to purchase.