DELETED & TUNED DURAMAX DUALLY 4X4 WITH ONLY 58K MILES!!! This 2016 GMC Sierra 3500 SLT Crew Cab Dually 4WD Duramax Diesel is a hard-to-find, low-mileage truck with only 58,000 miles! Powered by the legendary 6.6L Duramax paired with the Allison tran...