Ok, I have an 04 Durango with 4.7l and today it started acting up and lit the MIL. Ran the codes and got Transmission control system malfunction and Shift Solenoid A malfunction. Looking around I am not sure if this is a complete solenoid pack, and if so is it mounted outside the trans?

This is kind of important because if it is a complete pack then I am likely to just take it back to the dealer and pay the $100 deductible for the warranty and make them do it, but if it is a single solenoid that I can get for less than that I can do it myself. So, where is A and do I have to buy the complete solenoid pack?

Thanks in advance for any information you can guys can give me.