GMC Sierra 2013 GMC Sierra HD2500 Model: 2013 Mileage: 450 (dashboard changed to 620) Engine: Guaranteed Transmission: Guaranteed 6-speed 4WD: Guaranteed Differential: Guaranteed Body: Fully repainted for cleanliness + needs polishing Interior: 70% Suspension: Needs front shock absorber bushings and brakes Additions: 40,000 BTU transmission cooler Specifications:- : 4WD : Power windows : Cruise control