the unfortunate truth is that the guy your dealing with was probably flipping burgers a week ago and has no idea what he is doing. Alot of time your service depends on the person you are dealing with and from the other side of this situation gm is not making things any easier with all their oil change programs and paperwork debacles. I work at the Chevy dealer in highland ive been doing service for 13 years and I've helped several people on this forum. If you have any questions about oil changes or anything in general give me a call my direct line is 248-748-1133 id be more than happy to help.
sorry about your experience at the "fenton" dealership.