Two owners of diesel-powered General Motors vehicles are accusing the car maker of producing an engine that exceeds U.S. standards for pollutant emissions under normal driving conditions, in a lawsuit ...

The newest diesel engines and powertrains offered by GM, Ford, and Dodge have energized diesel-pickup enthusiasts and aftermarket manufacturers alike--for good reason. Performance has entered a whole ...

Looks like it’s General Motors’ turn in the barrel: The automaker has been accused of installing defeat devices in its trucks’ diesel engines in an attempt to beat emissions tests. People who own or ...