These issues have occurred across the GMC Sierra ... the Bosch CP4 fuel pump can become a weak link in the fuel system, creating several problems. Owners have voiced serious issues like sudden ...
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Common Problems With GM's Ecotec3 L83 Engine (According To Owners)It is found in the 2014-2019 Silverado 1500 and GMC Sierra 1500 pick ... Direct injection can lead to problems later, though, because the engine needs proper fuel selection and maintenance to ...
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