Transmission Component and System Description

The mechanical components of the 8-Speed RWD are as follows:

• A torque converter with an electronically controlled capacity clutch (ECCC). ECCC was developed to reduce the possibility of noise, vibration or chuggle caused by TCC apply. In a torque converter with ECCC, the pressure plate does not always fully lock to the torque converter cover. Instead, the pressure plate maintains a small amount of slippage. In RWD 8-Speed transmissions, this slippage can range from 0-50 RPM. Full lockup (0 RPM slip) is still available on some applications. TCC may apply in 1st trough 8th gear. The specific TCC apply points and the amount of clutch slippage are determined by a number of operating conditions, including throttle position, vehicle speed, gear, as well as specific vehicle application. Transmission fluid temperature will also affect TCC apply points.
• Binary Vane-Type Fluid Pump Assembly
• 1-3-5-6-7 Clutch Assembly
• 2-3-4-6-8 and 4-5-6-7-8 Reverse Clutch Assembly
• Direct/Overdrive Internal Gear Assembly
• Direct/Overdrive Carrier Assembly
• Input Internal Gear Assembly
• Input Carrier Assembly
• Input Sun Gear Assembly
• Reaction Internal Gear and 1-2-3-4-5 Reverse Hub Assembly
• Reaction Carrier Assembly with Output Internal Gear Assembly
• Output Carrier Assembly
• Output Shaft
• Control Valve Body Assembly

The electrical components of the 8-Speed RWD are as follows:

• Input and Output Speed Sensor Assembly
• Manual Shift Shaft Position Switch
• Control Solenoid Valve Body, which contains the following components:
  • 8 Transmission Control Solenoids
  • Torque Converter Clutch (TCC) Control Solenoid
  • Default Control Solenoid
  • 1-2-3-4-5 Reverse Boost Solenoid