GM's new 8.3-liter Duramax Mongoose targets Ford's Power Stroke and Ram's Cummins, but record diesel prices could hurt HD truck buyers at the pump.

General Motors once stated, on the record, that every prototype of its 4.5L Duramax V8 diesel had been destroyed. That claim just got a lot harder to defend. A surviving unit has surfaced in Sweden, ...

If you like seeing impressive engine specs, look no further than GM's latest V8 Duramax, which seems to be aiming to leave the competition behind.

New GM light-duty engines include a 481-hp V8 and a Duramax diesel with 900+ miles of estimated highway range.

Last week, GM announced a list of specs for the new 8.3L V8 L6P turbodiesel Duramax, also known as the Mongoose, dropping in with a class-leading 555 horsepower and 1,230 pound-feet of torque. Those ...

General Motors has been using Duramax diesel engines in certain workhorse models for nearly a quarter century. The 6.6-liter V8 version which powers Chevy Silverado 2500/3500HD and GMC Sierra Heavy ...