Location of the thermostat on a 2003 dodge caravan with 3.3 liter v6?

The thermostat on a 2003 Dodge Caravan with a 3.3L V6 engine is located on the engine, at the lower passenger side of the engine block. It's usually near the water pump. You'll need to look closely; it's a relatively small housing. Access might require removing some components like the fan shroud or perhaps some plastic engine covers. A repair manual specific to your year and model will give you the most detailed instructions and diagrams.