Some vans do and some don't... At least some have "finned" cooler and some just have a metal tube loop.My mistake, it does have a cooler.
and 2002 with no cooler:2002 Power Steering Cooler
It's all here:What are the sizes of the 2 small power steering hoses going to the P.S. cooler on a 2002 Town and Country 3.3 engine?