If you want to figure out which of these Duramax variants is under the hood of your early-2000s GM truck, the easiest way to do so is by verifying the vehicle's model year, with the LB7 utilized ...

However, early Duramaxes aren't problem free. The biggest issue with '01-to-'04 and 1/2 LB7 engines is their fuel injectors' propensity to fail, typically before an engine reaches 100,000 miles.

For this, we turned to the skilled hands at L&R Engines in Santa Fe Springs, California. L&R is a small family-run shop that was founded in 1976 in the garage of Larkin Ranney and his wife Robbie ...

The first fruit of GM and Isuzu's partnership was the 6.6-liter Duramax LB7 engine that debuted in 2001 in heavy-duty pickups like the Chevrolet Silverado 2500HD, offering a fresh new start after ...

Early in the history of Duramax engines, GM changed the LB7 series of engines to LLY, but it can be difficult to tell them apart. Here’s how.