About two decades after the launch of the 6.6-liter Duramax V8, GM's 3.0-liter Duramax inline-six turbodiesel arrived in 2019 with a promise to deliver "outstanding fuel economy, great horsepower, and ...
General Motors has initiated a Service Update for the 2024 GMC Sierra HD, addressing an issue with the 6.6L V8 L5P turbodiesel Duramax engine. According to the update, affected units may not ...
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