Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Water damaged GM 4L80E › Reply To: Water damaged GM 4L80E May 7, 2023 at 3:20 am #1024911 Rahul JonesParticipant It would be recommended to replace the torque converter too. As the lock up mechanism could have suffer some damages which we won’t know unless we fix everything and do a long road test.