Duramax – the diesel engine that saved GM’s heavy-duty pickups – is 10 years old, and the company celebrated the milestone last week. In 2000, Isuzu and GM started joint production of the first ...

High mileage on a 6.6 Duramax is less about a single scary number on the odometer and more about how that number lines up with the engine’s design, maintenance history, and known weak spots. The same ...