I have the annoying whine, no codes or errors and a kick during descends with cruise control on. My IRS could be miss aligned but Don't know who in my poor country could align it properly are you running steeda IRS alignment kit ?Good Morning bnight -
After installing the new hub and making sure the rear IRS was aligned properly, I didn't have any more issues. If your issue is only with the cruise control on maybe it is a sensor or something related to cruise control? Did the dealer pick up any codes? Sorry for your trouble, hope the dealer is able to fix with the parts you are replacing.