
to NICO!
Although towing the car with the rear wheels on the ground is a good way to toast the transmission, I would think a problem with it would show up in a more traditional transmission failure like symptom. Something like not shifting into D easily, or not backing up in reverse.
Unfortunately I don't have much more for you than that. It's worth looking through your factory service manual, available at
www.nicoclub.com/FSM/ to see if there are any diagnostic codes to see.
What brought on the need for the tow truck in the first place?
Heath