Approaching four decades ago, automakers were scrambling for solutions to fuel economy woes, and GM was no exception. Computer-controlled carburetors and the birth of electronic throttle body fuel ...

The 4L60E is the latest in a long line of durable, high-function GM overdrive automatics that have come our way since the 1960s. The TH350 three-speed automatic had long been a mainstay with Chevy ...

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 ...

With their debut in the 1990s, GM's 4L60E and 4L80E transmissions reveal some of their differences –- and similarities –- right in their names. The "4" and "L" respectively refer to the number of ...