Know What's Wrong
This is my thread to help those in need of knowing what is going on with your Aveo/sibling car.
Post a problem and/or what you found out about it and the solution. Help a fellow Deawoo/Chevy/Holden/other owner out.
My problems/Solutions
Was running on 3 cylinders, terrible mpg, various rumbles and groans.
It took weeks to get sense out of anyone, but the O2 sensor was burned to a crisp.
After that was replaced it ran brilliantly.