2011 - 2016 6.6L Duramax LML

The LML Duramax is a strong platform, but it is also where a lot of owners start dealing with CP4 concerns, fuel pressure regulator problems, injector wear, and high-mileage engine replacements. A broad LML page should cover the whole truck, not just one fuel system issue.

CP4 conversions, fuel system upgrades, injectors, turbochargers, engine parts, exhaust systems, and transmission upgrades for 2011-2016 LML trucks are all common once owners start chasing reliability or towing performance. A lot of trucks stay close to stock power but still receive preventative fuel-system work.