J.D. Power is out with its U.S. Vehicle Dependability Study for 2104 and General Motors ended up some impressive scores.  Cars and trucks surveyed were at least three years old. Their owners were questioned about the kind of problems they've had. The report found when a wide range of repairs were taken into account G.M.C., Buick, Cadillac and Chevrolet all came out even or ahead of the industry average. Auto analysts say many new vehicle shoppers pay close attention to studies like this when browsing showrooms and often they will make a considerable impact when it comes time to make a buying decision.

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