GM used the pump on its 6.6-liter LGH and LML Duramax diesel engines through 2016, opting to use the Denso HP4 pump on the L5P Duramax ... they used the CP3 version. While it was heavier and ...

GM 6.6-Liter Duramax LML: CP4.2 … the Weakest Link GM says the change from the CP3 pump used in the earlier ... General Motors' L5P-diesel assistant chief engineer who was part of the LML ...

High-pressure common-rail injection technology has revolutionized the diesel industry. Over the last decade, it has allowed engine builders to run higher injection pressures (as much as 29,000 psi ...

Before GM introduced its L5P turbodiesels, there was a standout ... GM switched from a CP3 pump used in previous engine iterations to the CP4 in the LML so that drivers could utilize alternative ...

Internally referred to as L5P, the newest Duramax is available in ... portion of the boosted air generated by the turbocharger to pump the collected oil back to the engine oil sump for re-use ...