Why does the 3.0L Duramax diesel in Chevy and GMC 1500s have a rear gear train? It all traces back to its European roots. This engine was originally developed by Opel in Europe, which explains the compact design and rear-mounted timing system. But is that a good thing for North American trucks? In this video, I break down the connection between Opel and GM, why they engineered the Duramax this way, and whether it helps or hurts long-term reliability and serviceability. Let me know what you think — smart engineering or just overcomplicated?

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