V6 engines may experience surging while driving. The condition is more noticeable between 40 and 50 MPH while accelerating up a hill/slight incline. Replacing the powertrain control module (PCM) and updating the transmission control module (TCM) software may be required.
Car Problem Reports
Dodge Caravan Surging While Driving Between 40 and 50 MPH
Dodge Caravan Problem
Visitor, 2002 Dodge Caravan, 10,700 mi
tcm and speed senors needed to be replace-part from dodge was 330-other remanufactured tcm modules were less but they would not allow for return or guarentee the lastest updates from dodge was loaded-for the 100 buck i would have saved the headaches would not have been worth it