Rick,
That's as good a name as any. GM calls it a TV cable, some call it a kick-down cable or a throttle cable (not to be confused with an accelerator cable). Throttle position cable aptly describes it's job as it is telling the transmission just that......
Junkster,
Could be solenoid(s) or maybe the neutral safety switch. I have seen at least 1 neutral safety switch messed up by coolant leaking on it from a bad PHH. There is also a possibility that the valve body is un-happy with you.
Dan.