The 2009 Chevrolet Silverado is not only the strongest ever offered by Chevrolet, but it delivers segment-topping fuel economy - a combination that is winning over more and more customers and critics - including repeat appearances on Car and Driver's 5Best Trucks list for 2008. For '09, Silverado's fuel economy advantage is enhanced with a new six-speed automatic that is paired with V-8 engines (except the 4.8L). Also, a new 6.2L V-8 with variable valve timing...