We recently discussed diesel programmers and the role they play in our pursuit of higher performance. Although the OBD-II-driven devices have many different functions, changing the parameters in a ...

There's an interesting thing about early Chevrolet Silverado and GMC Sierra trucks equipped with the Duramax diesel engine and Allison transmission. From 2001-2005, these trucks were equipped with a ...

DEAR CAR TALK: I recently purchased a GMC 3500 with a Duramax diesel engine. Friends with diesel engine trucks are telling me of increased power and gas mileage obtained by adding aftermarket chips or ...

The diesel tuning business has changed a lot in the last four years. The Environmental Protection Agency is scrutinizing everybody from huge engine manufacturers like Cummins to small tuner shops.

Buyers waiting patiently for the first light-duty diesel pickup from General Motors in decades will need to wait longer. The 3.0-liter Duramax inline-six turbodiesel engine’s launch has been postponed ...