2001 Chevy 3500 4X4 Wrecker Truck 6.6 Duramax (lb7) twin line with an extendable boom, operational wheel lift. 6000 miles on 6 new tires. Allison Automatic. Air, Cruise Tilt, Runs, drives and operates. This unit will need head gasket replaced. It does not show up in running, but we have tested it and know this to be true. A/C will leak down over time. We are a Chevrolet Buick GMC dealer. Can be inspected at Sleepy Hollow Chevrolet Buick GMC in Viroqua WI. Sells to highest bidder.