First check the fuses. If the fuses are okay I would suspect the switch and plug had a meltdown or the blower motor itself is shot. If it was the blower speed resistor that was shot you would still have high speed.
The radiator fan is probably not working.
The 2001 Dodge Grand-Caravan has a 4-speed automatic.
The 2004 Dodge Grand-Caravan has a 4-speed automatic.
The 2005 Dodge Grand-Caravan has a 4-speed automatic.
The 2010 Dodge Grand-Caravan has a 4-speed automatic.
The 2002 Dodge Grand-Caravan has a 4-speed automatic.
The 2006 Dodge Grand-Caravan has a 4-speed automatic.
The 2007 Dodge Grand-Caravan has a 4-speed automatic.
The 2009 Dodge Grand-Caravan has a 4-speed shiftable automatic.
The 2014 Dodge Grand-Caravan has a 6-speed shiftable automatic.
The 2012 Dodge Grand-Caravan has a 6-speed shiftable automatic.
The 2013 Dodge Grand-Caravan has a 6-speed shiftable automatic.