Sensors and Wiring for 2007.5-2010 6.6L LMM Duramax

Just like the LBZ it replaced, the Duramax 6.6-liter LMM engine is known for its overall reliability.

To help GM meet stricter emissions standards, the LMM was equipped with an exhaust gas recirculation system. However, in 2011, the automaker issued a recall for the Duramax EGT sensor as inadequate circuit board welds could fail and lead to exhaust gas not filtering properly, resulting in reduced power. Replacing both EGT sensors remedied the problem. +Read more

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