This Chevrolet Silverado 2500HD delivers 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 Features the Following Options *TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display, HEAVY DUTY FRONT SPRING/CAMPER PACKAGE , TRAILERING WIRING PROVISIONS for trailering, 5th wheel and gooseneck trailer, includes additional 7-way wiring harness located at the rear of the pickup bed attached to the rear frame cross member, TIRES, LT275/65R20 ALL-TERRAIN, BLACKWALL (STD), 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, MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY, LAMPS, SMOKED AMBER ROOF MARKER, (LED).