Software updates are available that may help with harsh shifting issues. Software updates are commonly more effective on newer vehicles. It is possible for a mechanical failure to also cause a harsh shifting problem. Whenever mechanical transmission repairs are performed, the software should be checked and updated as necessary.
Software Updates May Help Harsh Shifting on Dodge Grand Caravan
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My caravan from 1 gear to 2 gear on slow accelaration it does a clunk clunk before going into 2 gear. I change fluid , solenoid pack , both speed sensor.
had a harsh shifting problem @ times, changed the TPS problem solved