This Chevrolet Silverado 2500HD delivers a Gas/Ethanol V8 6.0L/366 engine powering this Automatic transmission. ENGINE, VORTEC 6.0L VARIABLE VALVE TIMING V8 SFI, E85-COMPATIBLE, FLEXFUEL, Windows, power with driver express up and down and express down on all other windows, Wheels, 17' (43.2 cm) machined aluminum includes 17' x 7.5' (43.2 cm x 19.1 cm) steel spare wheel. Spare not included with (ZW9) pickup box delete unless a spare tire is ordered. (Upgradeable to (PYV) 18' (45.7 cm) chromed aluminum wheels, (RT4) 18' (45.7 cm) Black aluminum wheels, (RTH) 20' (50.8 cm) polished aluminum with Dark Argent Metallic pockets wheels or (PYU) 20' (50.8 cm) polished aluminum wheels.) (Upgradeable to (PYV) 18' (45.7 cm) chromed aluminum wheels, (RT4) 18' (45.7 cm) Black aluminum wheels, (RTH) 20' (50.8 cm) polished aluminum with Dark Argent Metallic pockets wheels, (PYT) 18' painted steel wheels or (PYU) 20' (50.8 cm) polished aluminum wheels.). This Chevrolet Silverado 2500HD Comes Equipped with These Options Wheelhouse liners, rear (Deleted with (ZW9) pickup box delete is ordered.), Visors, driver and front passenger illuminated vanity mirrors, Transmission, 6-speed automatic, heavy-duty, electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (Requires (L96) Vortec 6.0L V8 SFI engine or (LC8) 6.0L V8 SFI Gaseous CNG/LPG capable engine.), Transfer case, electronic shift with rotary dial controls (Requires 4WD models.), Tires, LT245/75R17E all-season, blackwall, Tire Pressure Monitoring System with Tire Fill Alert (does not apply to spare tire), Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door (Not included when (ZW9) pickup box delete or (9J4) rear bumper delete is ordered.), Teen Driver configurable feature that lets you activate customizable vehicle settings associated with a key fob, to encourage safe driving behavior. It can limit certain vehicle features, and it prevents