There appears to be 2 styles of throttle bodies for these vehicles. The one posted above and a fly by wire type like I have on mine (06 Aveo LS hatchback). I am dealing with a stumble with idle on my car and tried to find the IAC and found that it did not have one. The idle is controlled by a electric motor mounted in the TB. I tried a self learn idle proceedure I found on a service manual from a Kalos but it did not seem to work. (I suspect this may be do to the ECM in my car being different that the Kalos so I have to find the correct proceedure). I am posting a pic of my TB, if you have this style is is a fly by wire and which is quickly identified by the lack of a throttle cable. I am not sure how much this helps but it may help clear things for you.

Name: Aveo TB.jpg Views: 48526 Size: 93.7 KB