Cadillac, Buick Top J.D. Power Study For Post-Sales Service

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Two General Motors [NYSE: GM] brands, Cadillac and Buick, do the best job with service after the sale, while a few brands that do well in reaching (and impressing) shoppers with their products aren't doing such a good job at the dealership. The two brands topped the J.D. Power 2014 Customer Service Index (CSI) Study, with Cadillac at the top of...

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