-'May the Best Car Win' marketing effort demonstrates GM's confidence in the quality, durability of its cars, trucks and crossovers
-60-day Satisfaction Guarantee covers 2009 and 2010 Model Year vehicles
-Builds on 100,000-mile/five-year powertrain warranty
-Covers all vehicles sold by Chevrolet, Buick, GMC and Cadillac
-Program runs Sept. 14 through Nov. 30
