GM’s Chevrolet, Buick Achieve Sole Gains in Annual Auto Survey

General Motors Co., under scrutiny for its slowness in handling a recall linked to fatalities, was the only automaker to have two brands that gained ground in a widely watched survey of customer satisfaction.

GM’s Buick and Chevrolet each rose while the total score for cars and light trucks fell 1.2 percent to a five-year low in the annual American Customer Satisfaction Index, the research group said today in a statement. Overall, GM ranked ahead of Ford Motor Co. with Buick gaining 1 percent to match scores for the namesake brands of Toyota Motor Corp. and Honda Motor Co. Chevy rose 4 percent to overtake the Ford, Nissan, Chrysler and Hyundai brands.