Since launching in 1992 as a replacement for the 6.2 diesel V8, the 6.5-liter GM Detroit diesel engine has had good years and bad years, and opinions on its merits have been just as mixed. Some view it as a dependable performer, and others consider it a badly flawed, undesirable powerplant. Whichever side of the divide you stand on, you’ll agree that the GM-Detroit Diesel V8 engine was at least a necessary step toward the more widely acclaimed Duramax V8
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