Other Options: TIRES LT265/70R18E ALL-SEASON BLACKWALL (STD), GOOSENECK / 5TH WHEEL PREP PACKAGE Hitch platform to accept Gooseneck or Fifth wheel hitch. Includes Hitch platform with tray to accept ball and drilled box holes with caps installed box mounted 7-pin trailer harness (similar to (UY2) harness)., MIRRORS CHROME OUTSIDE HEATED POWER-ADJUSTABLE VERTICAL TRAILERING MEMORY-EQUIPPED UPPER GLASS POWER-FOLDING AND MANUAL EXTENDING; 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, 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
