Do you have to pull engine replace oil pump in 2000 dodge caravan 3.0?

No, you generally do not have to pull the engine to replace the oil pump in a 2000 Dodge Caravan 3.0L. While it's a fairly involved job requiring significant disassembly of the bottom end of the engine (oil pan, timing chain cover, etc.), it's usually achievable without engine removal. However, access can be tight and it's a more difficult job than on some vehicles.