Radiator fluid leaked into the transmission fluid through the coolant system.

We replaced it but it was too late for the transmission....it will not downshift if you are at a stop light or if you are turning a corner and you try to re-accelerate. We flushed the traney no less than 20 times but the problem is still there. And to make matters worse my car was struck head on by a deer on Saturday the radiator was destroyed. Now we will see how bad the problem is and if it can be replaced. unbelievable.