Duramax Deferral: Emissions Delay Punts Straight-six GM Diesel to 2020 Model Year

General Motors’ new Flint-built, light-duty 3.0-liter inline-six turbo-diesel won’t be a late-year addition to the company’s full-size pickup lineup, after all. Apparently, the engine’s emissions certification process was not the speedy affair GM had hoped for. Customers will now have to wait for the 2020 model year before getting their hands on the 460 lb-ft […]
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