In fact, the cause of the problems, as stated in the lawsuit “hundreds of thousands of buyers of General Motors pickups,” was not the company itself, but its supplier – Bosch, whose fuel pumps do not stand the test of American diesel fuel. Air pockets form inside the pump, in the volume of which metal parts rub against each other without lubrication, creating metal chips that enter the fuel, the injection system, and then into the engine.
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According to Detroit News, the engine crashes “suddenly, catastrophically and without warning,” sometimes during movement, and it is no longer possible to reanimate the engine on the road. Claims are put forward mainly to the 6.6-liter diesel V8 Duramax, which is installed on many models of pickups and minibuses of the brands Chevrolet (for example, Silverado) and GMC.