I know you can yank the modem out of a SuperDuty. Say what you will about them, they're work-oriented despite the luxury packages available and don't force you into being treated like the product -- Ford will track your location if you don't pull the modem, but at least it isn't necessary for the ICU and it doesn't nag you about the anything being disconnected. Fuel prices and gas economy are another issue...

(You may be able to do this with other Ford models)

Sorry, I meant ECU not ICU.