This Chevrolet Silverado 2500HD boasts a Turbocharged Diesel V8 6.6L/ engine powering this Automatic transmission. Z71 OFF-ROAD PACKAGE includes (Z71) Off-Road suspension with off-road tuned twin tube Rancho shocks, (JHD) Hill Descent Control and (NZZ) skid plates (transfer case and oil pan), WINTER GRILLE COVER, WHEELS, 20 (50.8 CM) POLISHED 8-spoke (STD).*This Chevrolet Silverado 2500HD Comes Equipped with These Options *TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display (Includes (KSG) Adaptive Cruise Control., HEAVY DUTY FRONT SPRING/CAMPER PACKAGE , TIRES, LT275/65R20 ALL-TERRAIN, BLACKWALL (STD), TAILGATE, MULTI-FLEX with six functional load/access features, NOTE: Auto release can be disabled if ball hitch is installed. See Owner's manual for details, TAILGATE, GATE FUNCTION MANUAL WITH EZ LIFT includes power lock and release, SUNROOF, POWER on Crew Cab models, SKID PLATES protect the oil pan, front axle and transfer case, SEATS, FRONT BUCKET with center console, for Crew Cab and Double Cab models (STD), REAR CAMERA MIRROR, INSIDE REARVIEW AUTO-DIMMING with full camera display, REAR AXLE, 3.42 RATIO.