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) ,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. With TK10743 model requires (A50) Bucket seat.) ,TRANSMISSION, 10-SPEED AUTOMATIC, (COLUMN SHIFTER) ELECTRONICALLY CONTROLLED with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (Included and only available with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine and requires (AZ3) front 40/20/40 split-bench seat.) ,X31 OFF-ROAD AND PROTECTION PACKAGE includes (X31) Off-Road Package, (CGN) spray-on bedliner and (RIA) All-weather floor liners, LPO (Requires 4WD model, AT tires and either (L84) 5.3L EcoTec3 V8 engine or (LZ0) Duramax 3.0L Turbo-Diesel I6 engine. Not available with (NHT) Max Trailering Package.) *GROSS* ,LPO, OFF-ROAD HIGH CLEARANCE STEPS (dealer-installed) (Not available with any other RPO or LPO assist step.) ,X31 OFF-ROAD PACKAGE includes Off-Road suspension, (JHD) Hill Descent Control, (NZZ) skid plates, (K47) heavy-duty air filter and X31 hard badge Includes (B1J) rear wheelhouse liners, (QAE) 275/60R20SL all-terrain, blackwall tires and (NQH) 2-speed transfer case. Includes (N10) dual exhaust. (Requires 4WD model and AT tires. Included with (RFX) X31 Off-Road and Protection Package. Not available with (L3B) TurboMax engine, (NHT) Max Trailering Package or 22 LPO wheels.)