Option Packages<br />DURAMAX PLUS PACKAGE: includes (LML) Duramax 6.6L Turbo Diesel V8 engine, (MW7) Allison 1000 6-speed automatic transmission, (GT4) 3.73 rear axle ratio, (K05) engine block heater, (K40) exhaust brake and (IO6) Chevrolet MyLink 8 Diagonal Color Touch audio system with Navigation (Includes (PDF) LTZ Plus Package. Z71 PACKAGE, OFF-ROAD: includes twin tube Rancho brand shocks, (JHD) Hill Descent Control, (NZZ) Underbody Shield. Also includes brushed metal Z71 door sill plate, unique Z71 gauge cluster, unique finish interior trim plates, unique lower bumper appearance, unique grille design with Z71 badge and Z71 pickup box decals includes twin tube Rancho brand shocks, (JHD) Hill Descent Control, (NZZ) Underbody Shield. Also includes brushed metal Z71 door sill plate, unique Z71 gauge cluster, unique finish interior trim plates, unique lower bumper appearance, unique grille design with Z71 badge and Z71 pickup box decals, Leather Seats, 4x4, Heated Driver Seat, Back-Up Camera, Diesel <br /><br />Please confirm the accuracy of the included equipment by calling us prior to purchase. <br />