The 4L80E is a truck automatic transmission that was introduced by GM in the early '90s. It basically uses many of the same internal components as the TH400 but has an overdrive Fourth gear and uses ...

For the better part of the 20th century and much of the 21st, General Motors has been one of the largest automobile manufacturers in the world. The company has long been known for building tough, ...

Our 5,400-pound, 400hp 4x4 has chewed through no less than four 4L60E four-speed automatic transmissions in less than a decade. The failures have included: a smoked torque converter clutch, which ...

4L80Extraordinary! - GM’s race-tested-tough, street/strip overdrive automatic from Performance Automatic is the latest in a respected pedigree GM’s 4L80E overdrive automatic is the latest in a ...