You can setup your own the way that you want them. However the only GM controlled source will be 999. That is the source they use to track potential new RIM proposals and track demand on those numbers. If their are sources that you setup that you don't want GM to use for proposals you will have to call RIM to tell them not to track that particular source for proposals.
IM ON R&R AND WHEN WE ADD A PART THE MASTER TAPE ADDS A SOURCE. IS THAT SOMETHING THAT WAS SET UP BY REYNOLDS? MORE LOOKING TO SAY HAVE BRAKES ALL IN ONE SOURCE THEN I CAN TRACK THINGS EASIER.
Yes you can setup as many as you wish. I have 17 right now...Batteries, Accessories, Weathertech Mats, Returns...it helps me for tracking sales of certain things and stocking of them as well.