Very little changed for 2004. I'm trying to pull this stuff from memory, somebody please correct me if I'm wrong about something or leave something out...
1) there's now a lid on the cubby thing above the radio/HVAC controls
2) some new brightwork in the interior
3) slightly different wheels (i know the 16-inchers changed, think the 17s are a tad different too)
4) "smoked" headlight/taillight surrounds
5) 2-driver memory doohicky