2011-2016 GM 6.6L Duramax LML

If you run an LML, the conversation starts with the CP4.2 and whether you're converting, replacing, or just getting ahead of it before it decides for you. That's the work this generation is known for, and it's where most LML builds begin. Everything on this page fits the 2011-2016 Chevrolet...

If you run an LML, the conversation starts with the CP4.2 and whether you're converting, replacing, or just getting ahead of it before it decides for you. That's the work this generation is known for, and it's where most LML builds begin. Everything on this page fits the 2011-2016 Chevrolet Silverado and GMC Sierra 2500/3500 6.6L.

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