I have had 50% success. They fixed my rear wheel wells which had visible rust (as seen from the outside of the vehicle). My warranty expired Dec 13 and I took it in to show them the hood and rear hatch and they would not fix that. Those two areas are rusting in the seams and it is visible when they are open but not when the hod/hatch are closed, so they would not fix it.
2005 T&C Signature Series, 64,xxx miles
Lots of rust, leaking steering rack, bad rear AC condenser coil, rusted (and replaced) rear brake line. Looking forward to the next failure/defect that this Chrysler will bring into our lives.