EPA 27 MPG Hwy/23 MPG City! Heated Leather Seats, Sunroof, Navigation, Onboard Communications System, Satellite Radio, 4x4, Alloy Wheels, Trailer Hitch, SLT PREFERRED PACKAGE, SIERRA SAFETY PLUS PACKAGE, SLT PREMIUM PLUS PACKAGE KEY FEATURES INCLUDELeather Seats, 4x4, Satellite Radio, Onboard Communications System, Trailer Hitch. GMC SLT with Onyx Black exterior and Jet Black interior features a Straight 6 Cylinder Engine with 355 HP at 5600 RPM*. OPTION PACKAGESSLT PREMIUM PLUS PACKAGE includes (PCY) SLT Convenience Package, (PDY) SLT Preferred Package, (PED) Sierra Safety Plus Package, (ZL6) ProGrade Trailering system, (NZD) 20 Polished aluminum wheels, (BVT) Chrome assist steps and (CGN) spray-on bedliner. SLT CONVENIENCE PACKAGE includes (A50) bucket seats with (D07) center console, (KQV) ventilated front seats, (K4C) Wireless Charging, (UQA) Bose Premium Audio System, (N38) Power Rake/ Telescoping steering column and (UBC) USB ports, 2 (first row) Charge and Data ports located inside armrest, SLT PREFERRED PACKAGE Includes (KSG) Adaptive Cruise Control, (A48) rear sliding power window, (UG1) Universal Home Remote and (KA6) heated second row outboard seats, SUNROOF, POWER, SIERRA SAFETY PLUS PACKAGE includes (UD5) Front and Rear Park Assist, (UFB) Rear Cross Traffic Braking, (UKK) Rear Pedestrian Alert, (TRG) Trailer Camera Provisions, (UKV) Trailer Side Blind Zone Alert and (UV2) HD Surround Vision (Includes (HS1) Safety Alert Seat. 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. AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE, INCLUDES COLOR TOUCH-SCREEN, MULTI-TOUCH DISPLAY, AM/FM STEREO Bluetooth® streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones (STD), 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. Horsepower calculations based on trim engine configuration. Fuel economy calculations based on original manufacturer data for trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.