DEFINITION: A large difference in RPM is noted between the engine speed and the transmission input turbine speed in third or fourth gear, Drive or Manual Third range when the TCC is commanded ON by the ECM.

Control Valve Body and Accumulator Assembly

Torque Converter Housing

Transmission fluid pump cover damaged or misaligned

TCC PWM Solenoid Assembly

Fluid Pump

Turbine Shaft

Damaged or cut O-ring

Inspect for active transmission DTCs

Transmission DTC default action active