The 4L60E and 4L80E are two of General Motors’ most discussed automatic transmissions, and the choice between them shapes how a truck, SUV, or LS swap behaves on the street and under heavy load. Both ...

Thanks to “heavy-duty truck maintainers” reporting fewer engine-related problems, Caterpillar and Cummins ranked highest in customer satisfaction in the J.D. Power and Associates 2007 Heavy-Duty Truck ...