If you put new sensors in like I did, you'll have to take it in.
Correct. I have an appointment for tomorrow to reset the sensors.
I did some research on the internet and learned about the two methods used for TPMS, Direct and Indirect. Crossfires use the Direct method and when the sensors are replaced, a DRBIII tool is used that hooks up to your OBDII port. The new codes transmitted from the new sensors are then entered into the ECU so that they get recognized. I would think anybody with a '04/'05 Crossfire will have failed batteries soon and that the sensors will have to be replaced.
Or you could just remove the bulb from the instrument panel.