This GMC Sierra 2500HD boasts a Turbocharged Diesel V8 6.6L/403 engine powering this Automatic transmission. TRANSMISSION, ALLISON 10-SPEED AUTOMATIC, 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, REAR AXLE, 3.42 RATIO.* This GMC Sierra 2500HD Features the Following Options *DENALI ULTIMATE PACKAGE includes (CWM) Technology Package and (CF5) power sunroof , ONYX BLACK, GVWR, 11,350 LBS. (5148 KG), ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE (445 hp [332 kW] @ 2800 rpm, 910 lb-ft of torque [1220 Nm] @ 1600 rpm) (Includes (K05) engine block heater.), Wireless Charging, Windows, power rear, express down, Windows, power front, drivers express up/down, Window, power, rear sliding with rear defogger, Window, power front, passenger express up/down, Wheels, 20 (50.8 cm) multi-dimensional Polished aluminum.* Stop By Today *Test drive this must-see, must-drive, must-own beauty today at Nimnicht Buick GMC, 11503 Philips Hwy, Jacksonville, FL 32256.