I had a lean code thrown about a month ago, took it in, they reflashed the computer to the latest update. Have not seen the code since.

Jason

 

Do you have another Chevy dealer close to you . If so I would go elsewhere . If these guys are jackin you around now , its not likely your gonna to far , especially if they cant even accurately diagnose the problem . I would also put a call in to the regional GM representitive in your area . You'd be amazed at how dealer tones change when the customer get a regional rep involved .