2003 GMC Sierra 3500 This truck currently has 143,000 miles and in great condition Grey Metallic exterior and with a matching Grey leather interior V8 Diesel automatic transmission with Overdrive technology Chipped for 400 Horsepower at 17 MPG City and 20 MPG Hwy Standard features include a cold working air conditioner within Am.Fm in dash radio plus a multi discs CD player OnStar communication system provided within Power steering and cruise control equipped Power windows, mirrors