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 the most part, this ’02 Chevy 2500 pickup spent its life towing studio trailers in Hollywood. The LB7 went through the wear and tear of being an LB7 engine, which included injectors being re ...