Some of your shift solenoids are EXTERNAL on the body of the tranny and others are mounted internally behind the filter. You'll have to check your manual to find out which solenoid is going out or maybe ask a DODGE mech which solenoid it could be and where it is??? If it's internal you can count on , a filter and about 6 QTS of fluid + the cost of the solenoid..
Hope this helped some!!!
Xnavylfr(CHUCK)