Unbelievable. I've about had it. I got home tonight and received an email from Onstar saying that I had an emission issue. I found this odd because I haven't had a check engine light and the car has been running fine since they hacked my baby apart at the dealership and put the OEM converter back on it. It has had a rough idle, but nothing that I'm not used too. So I called Onstar and she said yes, my car was showing a "fuel delivery issue", code P2237. Can anyone tell me what this is and if it may have anything to do with my converter replacement? If so, me and the dealer are going to have some MAJOR issues!!!!