GM Authority has learned that GM intends to buy back certain Chevy Silverado HD and GMC Sierra HD units back from customers due to apparent quality issues with the 6.6L L5P V8 Duramax turbo-diesel ...
Introduced in 2001, the Duramax V8 turbo diesel family was continuously improved over the years until the L5P that GM uses in heavy-duty trucks. Fully stock, the 6.6-liter mill develops 445 horsepower ...
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 ...
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