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Early in the history of Duramax engines, GM changed the LB7 series of engines to LLY, but it can be difficult to tell them apart. Here’s how.
A deep dive into Duramax engine generations, common complaints, and which years are best to avoid.
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Duramax Years To Avoid: A Guide To Common Diesel Engine Problems
A deep dive into Duramax engine generations, common complaints, and which years are best to avoid.
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