Originally Posted by Playa_fl
What are the benefits of manually locking/unlocking the torque converter? I have no clue about how this works. When its locked what does it do? Sorry to thread jack
The computer will lock the transmission to the engine at about 43 MPH using a lock up clutch in the TC for better MPG.
If you have the Mod it can be used for towing above about 25 MPH and engine braking. This can also keep the oil cooler in the transmission.