2010 chevrolet express duramax c3500 flatbed turbo diesel new engine

2010 ex ambulance new duramax engine in last 10k miles, ew tires, latbed, itch, ower. runs great texas van no rust except surface rust on bed, minor scuffs on from them running over some retreads on the highway. air isn't working was told needed charged. runs great shifts smooth 6spd auto...has suspension of a 4500...I also have a 7'6" snow dogg that can be bought separate also a Swenson spreader that is available too...as questions and happy bidding...I saw a 2011 with same miles go for 5700 the other day with no bed...this one is ready to work....happy bidding buying as is...thanks