So I have a little more information. I used an ohm meter to check the new sensor and it shows about 4 ohms across 2 pins on one side of the connector which I assume is the heater. I went back and checked the same two pins on the old sensor and they show as open. The car side of the connector shows about 8 volts across these two pins. I get 12 volts across two diagonal pins but there is infinite resistance across those pins on the sensor. This indicates to me that any fuses are fine. An OBDII reader app on my phone shows the O2 and heater circuits are not in a state of readiness and gives no reading for them. A bit more googling indicates that some ECM's have to be calibrated to a new heater. (or be put into a calibration mode).

Any idea if the Aveo falls into this category? If so, how do I do this?

Brian