Same here. Order in mid-June (Ultimate w/ SC and max towing). Order accepted 7/25 and built on 08/08. Per dealer vehicle is on a train north of St Louis....scheduled to arrive the week of 09/05. I have no clue if it will have SC. My guess is no. Dealer says it was "on the build". Somewhat frustrating because I was okay waiting for my order until December or January. Not sure how GM accepts factory orders....but doesn't deliver what was ordered. I could be wrong; however my hunch is I will have adaptive cruise control, but no SC.