If the transmission oil cooler has developed a leak allowing engine coolant to enter the transmission, perform the following:
- Disassemble the transmission.
- Replace all of the rubber type seals. The coolant will attack the seal material which will cause leakage.
- Replace the composition-faced clutch plate assemblies. The facing material may separate from the steel center portion.
- Replace all of the washers.
- Replace the torque converter.
- Thoroughly clean and rebuild the transmission, using new gaskets and filter.
- Flush the cooler lines after the transmission cooler has been properly repaired or replaced.