GM Launches 60-Day Satisfaction Guarantee; Offer Bolsters Campaign to Earn Consumer Confidencebr br -'May the Best Car Win' marketing effort demonstrates GM's confidence in the quality, durability of its cars, trucks and crossoversbr -60-day Satisfaction Guarantee covers 2009 and 2010 Model Year vehiclesbr -Builds on 100,000-milefive-year powertrain warrantybr -Covers all vehicles sold by Chevrolet, Buick, GMC and Cadillacbr -Program runs Sept. 14 through Nov. 30br br www.gm.comguaranteebr www.chevy.comguaranteebr www.buick.comguaranteebr www.cadillac.comguaranteebr www.gmc.