Its good to see a Fellow Tennesseean on here! now just to clarify, is your aveo a Sedan or a hatchback? because if your aveo is a Sedan, it would be Virtually impossible for the mechanic to replace the Check Engine Light bulb, since 2007 was the year the Sedan got completely restyled and the Instrument Cluster was changed to where most of the Warning Lights are Surface Mounted LEDs.