It looks like the PCM handles the transmission operation:
In addition to controlling engine operation, the Powertrain Control Module (PCM) controls transaxle operation. It does this by manipulating four solenoids -- Torque Converter Clutch (TCC), Shift Solenoid 1 (SS1), Shift Solenoid 2 (SS2), and Shift Solenoid 3 (SS3).
Please let us know if you need anything else to get the problem fixed.
Tuesday, December 27th, 2022 AT 11:34 AM