I have a 2007 Chevy Aveo and up until a couple days ago it wouldn't go over 5mph and now it won't move at all. The car starts but it won't go out of park and when you put the gas pedal to the floor, it won't go above 1000rpms. It threw 3 codes. One for the throttle body, one for the battery and one for the computer. We replaced all 3 parts and it's still not working. It's not throwing any codes now either. Does anyone know what else it could be?