Transmission Component and 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:

• 1-2, 2-3 and 4-5 shift solenoids
• Transmission manual shift shaft switch assembly
• Transmission pressure control (PC) solenoid
• TCC pulse width modulation (PWM) solenoid valve
• Transmission fluid temperature (TFT) sensor
• Input speed sensor (ISS)
• Output speed sensor (OSS)

For more information, refer to Electronic Component Description (5L40-E/5L50-E)  or Electronic Component Description (5L50-E) .