Here Are The Best Years For The 6.6 Duramax Engine (And The Ones You Should Avoid)
The first among these is the LML Duramax engine, which was introduced in 2011. The engine was available in the GMC Sierra and ...
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Best Duramax Engines
Only available in the Chevrolet Silverado and GMC Sierra, the LML was the most emissions-efficient Duramax engine to date thanks to its upgraded fuel injectors and oil pump; the addition of diesel ...