<p> This Chevrolet Silverado 3500HD delivers a Turbocharged Diesel V8 6.6L/403 engine powering this Automatic transmission. 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, WHEELS, 18" (45.7 CM) FORGED POLISHED ALUMINUM includes 18" x 8" (45.7 cm x 20.3 cm) steel spare wheel. Spare not included with (ZW9) pickup box delete unless a spare tire is ordered. (STD), TRANSMISSION, ALLISON 1000 6-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED with overdrive, electronic engine grade braking and tow/haul mode. <p><strong> This Chevrolet Silverado 3500HD Features the Following Options </strong><br /> SKID PLATE PACKAGE, FRAME-MOUNTED SHIELDS includes front underbody shield starting behind front bumper and running to first cross-member, protecting front underbody, oil pan, differential case and transfer case, LTZ PLUS PACKAGE includes (JF4) power adjustable pedals, (UQA) Bose premium audio system and (UD5) Front and Rear Park Assist., 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, (PDF) LTZ Plus Package and (IO6) Chevrolet MyLink 8" Diagonal Color Touch audio system with Navigation , TRAILER BRAKE CONTROLLER, INTEGRATED, TIRES, LT265/70R18E ALL-TERRAIN, BLACKWALL, STEERING WHEEL, HEATED, LEATHER WRAPPED WITH AUDIO AND CRUISE CONTROLS, STEERING COLUMN, MANUAL TILT-WHEEL AND TELESCOPING, SEATS, FRONT 40/20/40 LEATHER-APPOINTED SPLIT-BENCH, 3-PASSENGER WITH (KA1) HEATED SEAT CUSHIONS AND SEAT BACKS. Includes 10-way power driver and front passenger seat adjusters, including driver/front passenger power recline, driver/front passenger power lumbar, 2- position driver memory and adjus