I got a code 700 for transaxle at auto Zone . Does any one know waht this means?

 

P0700 is a Master code that is stored for various diff small time codes.
Just do a google search http://www.dodgedakotas.com/boards/gen/3045.html

My guess is that your transmission was shifting funky while you were towing and recorded an improper shift schedule????? just a guess

Here's the OBD database