The freeze plugs (also called core plugs) on a 2002 Dodge Caravan are located inside the engine block. There isn't a single, easily accessible location. They're usually found on the sides and sometimes the bottom of the engine block. To find them, you'd need to access the engine block, likely requiring partial disassembly of the engine's lower components.
You should consult a repair manual specific to your 2002 Dodge Caravan's engine (3.0L or 3.8L are common) for the exact locations and procedure.
Trying to locate them without a repair manual is difficult and potentially risky. The location varies slightly based on the engine type. A repair manual will have diagrams showing their placement.
