Transmission Component & System Description

The mechanical components of the 5L40/5L50-E are as follows:

A torque converter with an electronically controlled capacity clutch (ECCC)
This transmission is equipped with an electronically controlled capacity clutch (ECCC). The pressure plate does not fully lock to the torque converter cover. Instead, the pressure plate maintains a small amount of slippage, about 20 RPM, in SECOND, THIRD and FOURTH gears, depending on the vehicle application. ECCC was developed to reduce the possibility of noise, vibration or chuggle caused by TCC apply. Typical apply speeds are 49-52 km/h (30-32 mph) in THIRD gear and 65-73 km/h (40-45 mph) in FOURTH gear. Full lockup is available at highway speeds on some applications.
Direct and reverse clutch assembly
Forward and coast clutch assembly
Input sungear shaft and forward sprag clutch assembly
Output shaft assembly, with rear internal gear
Intermediate clutch sprag assembly
Overdrive clutch housing
Low clutch sprag
Center support
Input and reaction carrier
Fluid pump assembly
Control valve body and accumulator assembly

The electrical components of the 5L40/5L50-E are as follows:

For more information, refer to Electronic Component Description .