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General Motors Co. has been hit with a class-action lawsuit alleging it equipped 2011-2016 GMC and Chevrolet diesel trucks with 6.6-liter Duramax engines that are not compatible with American diesel fuel, also known as Diesel # 2. The lawsuit, filed Wednesday in federal court in Detroit, alleges GM sold “hundreds of thousands” of diesels with high-pressure fuel injection pumps designed by German auto supplier Bosch that pumped metal shavings into the fuel…