Known under the VIN code Y, the L5P Duramax is the latest evolution of the 6.6-liter turbo diesel that powers the Silverado HD and Sierra HD. Introduced for the 2017 model year and mated exclusively ...

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 ...

The GM L5P Duramax is a turbo-diesel engine produced by General Motors for use in full-size heavy-duty (HD) pickup trucks. Displacing 6.6 liters in a V-8 configuration, the L5P is part of a new ...

A new video has hit the net claiming that the factory engine oil filter installed on the 6.6L V8 L5P turbodiesel Duramax under the hood of the Chevy Silverado HD and GMC Sierra HD heavy-duty pickups ...

Unbeknownst to many of you, we have been running and testing a defense-market version of the all-new, ’17 6.6L Duramax L5P engine on the dyno since late 2015. Based on what we’ve learned during this ...

Well, the hammer did fall, as Derive Systems, the folks who bring us Bully Dog and SCT tuning software, programmers, and such, announced they are now working with the EPA to “establish and promote ...