So I just got off the phone with my wonderful service rep. She is wonderful, but, the seat issue is still an ongoing one. It looks like the track and motor assembly that was shipped in was worse than the one that was in it to begin with. In an attempt to locate a new one I was informed that there is a national back order for this part. Apparently there are lots of people experiencing this issue. It now must be a "known issue" and will be remedied by GMC. I don't know when, but at least they are working on it. Bummer for me is I still need to take it back in. For the third time. I hope it's third time is a charm.