This engine's Achilles' heel was its new high-pressure injection pump, which had a habit of failing. Nevertheless, according to Motor Trend , GM built over 600,000 LML Duramax diesels during the ...

The LML is expected to be GM’s cleanest diesel engine yet. Some have speculated that its displacement would grow to 6.9 liters for emissions reasons, but our sources say it will continue to be a ...

Wehrli Custom Fabrication’s 6.6L Duramax LML compound turbochargers reduce EGT and broaden the engine’s efficiency over a wider rpm range than a single-turbo application.