Just finished removing the Rad from my 2008 Aveo5 AC AT. Thanks for the good tips. To open the drain plug on the side of the passenger side plastic strip at the bottom. I loosened both hose clips on the upper heater hose, pushed hard in the middle of the hose with a screwdriver handle and it popped right off. I the was able to easily get on the drain screw with a closed end SAE 1/2 inch wrench. I removed the battery and the power steering reservoir which I just moved to the side without disconnecting. I had plenty of room to get the Rad out.