GOOSENECK / 5TH WHEEL PREP PACKAGE -- Hitch platform to accept Gooseneck or 5th Wheel hitch. Includes hitch platform with tray to accept ball stamped bed holes with removable caps installed and bed mounted 7-pin trailer harness (similar to UY2 harness)., LICENSE PLATE KIT FRONT, TRANSMISSION ALLISON 10-SPEED AUTOMATIC, DARK WALNUT/DARK ASH GREY FORGE PERFORATED LEATHER SEATING SURFACES, DENALI PREFERRED EQUIPMENT GROUP includes standard equipment, WINTER GRILLE COVER, ENGINE BLOCK HEATER, AUDIO SYSTEM PREMIUM GMC INFOTAINMENT SYSTEM WITH NAVIGATION AND 8" DIAGONAL COLOR TOUCH-SCREEN includes multi-touch display AM/FM stereo Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and