Originally Posted by pizzaguy

First step - what amber alarm lights are on with the motor running?

If the Fan module is bad, you should have a little radiator-looking icon turned on in the left hand area of the instrument panel.
If the fan simply won't run and you don't have this icon turned on, I'd suspect the PTCM is crazy. ANY issue with the FCM or a blown fuse feeding the FCM should light this indicator. If the PTCM is not turning the indicator on, I'd suspect the PTCM.