Main Control

The hydraulic system has a main control assembly. The main control assembly consists of a valve body and a solenoid body. Both the valve body and the solenoid body contain hydraulic shift valves. The solenoid body contains the shift solenoids that control the hydraulic valves. The solenoid body can be serviced as an assembly with the solenoids or the solenoids can be serviced individually. The solenoid body is controlled by the PCM  . The PCM  has software stored in it specific to the solenoid body currently in the transmission, called the solenoid body strategy. A new solenoid body strategy must be downloaded into the PCM  anytime a new solenoid body is installed.

The pump assembly contains the main pressure regulator valve assembly and the TCC  control valve assembly.