One problem related to transmission solenoid has been reported for the 2004 Chrysler Pacifica. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Chrysler Pacifica based on all problems reported for the 2004 Pacifica.
I had the transmission solenoid pack replaced on may 8th 2015. On Jun 21 2016 the car became erratic and I had to pull over on a freeway. After being told the mechanic said that this solenoid pack had a hole blown through the metal in addition to a short in the electrical system.