2011 GMC Sierra HD2500 Crew Cab 4x4. We are proud to bring you this HD2550 Crew Cab. Under the hood is the LML 6.6 liter Duramax turbo diesel engine with 397 HP and an amazing 765 foot pounds of torque. All this power is channeled through a six speed Allison transmission. The driver has the option of letting the transmission shift automatically or take control and shift it manually. Other factory options include SLT trim heated and full power leather front seats, a full size fold up leather rear seat, factory navigation, 18 inch polished alloys and rear sliding window. Fanatically kept and maintained, the Mocha Steel Metallic finish is excellent. Inside this truck is spotless. Never smoked in or abused. Dealer serviced and maintained, this truck has recent Toyo LT tries and front brakes. Automart is now celebrating 20 years as a full service dealership selling the highest quality trucks and cars in Derry New Hampshire. Same owners, same convenient location. We are open 7 days a week to handle any of your automotive needs. Interest rates are at historic lows and we offer financing for all credit types! You can reach us at (603) 425 1855 from 9:00 am to 7:00 pm.