General Motors has been using Duramax diesel engines in certain workhorse models for nearly a quarter century. The 6.6-liter V8 version which powers Chevy Silverado 2500/3500HD and GMC Sierra Heavy ...
GM recently allowed brief drives in the next-gen, meaner, cleaner Duramax diesel engine, albeit in the lighter-duty G-van (Chevy Express/GMC Savana) application. Changes to the new D-max are ...
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