Module, Transmission Control (TCM): Removal

For the 8 Speed transmissions, the valve body includes the Transmission Control Module (TCM), all solenoids and sensors, and can be referred to as the Transmission Control Module Assembly (TCMA). The TCM is attached to the valve body between the transmission case and the valve body. If any component of the valve body including the TCM sensors or solenoids needs to be replaced, the complete TCMA (valve body) must be replaced.

1. Remove the valve body in accordance with the service information:
   • For 850RE transmission. Refer to 8HP50/850RE, VALVE BODY, REMOVAL .
   • For 8HP70 transmission. Refer to 8HP70, VALVE BODY, REMOVAL .