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2007-2010 Duramax 6.6 LMM

The LMM 6.6L Duramax diesel engine was used in Chevrolet Silverado HD and GM Sierra HD trucks between 2007.5 and 2010. It featured a diesel particulate filter (DPF) system, which reduced emissions output but resulted in poor fuel economy due to the post-injection regeneration method used. Despite this issue, the LMM Duramax is still considered a reliable and capable diesel engine producing 365 Horsepower and 660 Foot Pound of Torque.