This GMC Sierra 2500HD delivers a Turbocharged Diesel V8 6.6L/ engine powering this Automatic transmission. TRANSMISSION, ALLISON 10-SPEED AUTOMATIC, SNOW PLOW PREP/CAMPER PACKAGE includes (KW5) 220-amp alternator, includes increased front GAWR on Heavy Duty models, (NZZ) skid plates (transfer case and oil pan), pass through dash grommet hole and roof emergency light provisions. Contact GM Upfitter Integration at www.gmupfitter.com for plow installation details and assistance. Note: if ordered for Camper usage, recommend ordering (UY2) Trailering wiring provisions, SLT PREFERRED EQUIPMENT GROUP includes standard equipment.*This GMC Sierra 2500HD Features the Following Options *GOOSENECK / 5TH WHEEL PACKAGE includes (Z6A) Gooseneck / 5th Wheel Prep Package. (Includes (CGN) spray-on bed liner and (UVN) Bed View Camera. , 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 Phone Projection for Apple Carplay and Android Auto, Windows, power rear, express down, Windows, power front, drivers express up/down, Window, power front, passenger express up/down, Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.), Wheelhouse liners, rear (Certain vehicles built prior to 3-21-2022 and after 4-7-2022 will include rear wheelhouse liners. Certain vehicles built on 3-21-2022 thru 4-7-2022 will be forced to include (RFZ) Not Equipped with Rear Wheelhouse liners, which removes Rear Wheelhouse liners. See dealer for details or the window label for the features on a specific vehicle. Not available with (ZW9) pickup bed delete.), USB ports, dual, charge-only (2nd row), Transfer case, two-speed active, electronic Autotrac with push button control (Requires 4WD models.).