To find the exact terms of the original powertrain warranty for a *specific* 2013 Dodge Grand Caravan, you'd need to consult:
* The original purchase paperwork: This would have detailed the warranty information.
* The owner's manual: It should have a section outlining the factory warranty coverage.
* A Chrysler/Dodge dealership: They can access warranty information using the vehicle's VIN.
Without access to those documents, it's impossible to say what the original drivetrain warranty was for a 2013 Dodge Grand Caravan. Any warranty would have likely expired by now, unless an extended warranty was purchased.