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CP4 Pump: Which Diesel Engines Use It And Why Is It So Problematic?
Before automakers started using the problematic CP4 pumps, they used the CP3 version. While it was heavier and perhaps less efficient, it was much more reliable. If your truck is powered by an LML ...
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Which Years Was The LML Duramax Diesel Engine Made?
Read more: How To Clean Your Car's Engine Bay: A Step-By-Step Guide GM switched from a CP3 pump used in previous engine iterations to the CP4 in the LML so that drivers could utilize alternative ...