The check engine light is coming ong on for my 1999 malibu. The Zone people say it istwo error codes for the the evap control system. They said it is a leak or something. I replaced the gas cap and looked for old hoses, but can't see anything.
Do any of you know if this is a common problem with these cars and is there a fix that you know of?
It also is getting terrible gas milage. around 16 miles to the gallon. I don't know if these are related or not.