I meant to post this how to last year when I bought my 2009 Aveo. I was very busy with school and forgot all about it. I know a few people on this forum have had issues with their transmissions. I believe preventative maintenance is the best policy so I service all my cars transmissions every 30k. The link below is to my blog where I posted the tutorial with pictures. Take a look and let me know what you think.
Joshua of all Trades. Master of Some.: Chevrolet Aveo transmission flush. AW81-40LE