This Chevrolet Silverado 2500HD delivers a Turbocharged Diesel V8 6.6L/ engine powering this Automatic transmission. UPFITTER SWITCH KIT, (5) Provides 3-30 amp and 2-20 amp configurable circuits to facilitate installation of aftermarket electrical accessories., TRANSMISSION, ALLISON 10-SPEED AUTOMATIC, 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.* This Chevrolet Silverado 2500HD Features the Following Options *HIGH COUNTRY PREFERRED EQUIPMENT GROUP includes standard equipment, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8 B20-Diesel compatible, (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm), ASSIST STEPS, POWER-RETRACTABLE includes LED lighting, Wireless Phone Projection for Apple Carplay and Android Auto, Wireless charging (Not compatible with all phones. Compliant batteries include QI and PMA technologies. Reference Mobile devices manual to confirm what type of battery it uses.), Wipers, front rain-sensing, Windows, power rear, express down, Window, power, rear sliding with rear defogger, Window, power front, passenger express up/down, Window, power front, drivers express up/down.