Please, I need help. I have an '09' Aveo. I was coming home from picking my daughter up from work...I stopped at the stop sign and when I started going again, the cars RPMs would go up to between 4 and 5 and the car would not go over 45MPH. The next day it ran just fine. I took it to the dealership where I bought it and the guy said he hooked it up to a machine but got no codes at all. He told me that if it happened again to stop and shut the car off and restart it. This happened again Saturday night. I did what he said and it runs fine again. Does anyone know what could be causing this? The mechanic told me that if it happened again and I was close to their shop, to stop in and leave it running so he could hook his machine up and try to get a code. He also said that he's googled the situation with my car and couldn't find any info. HELP!!! PLEASE!!!