Hi all, couldn't find this answer. I currently have a 2015 Silverado with the 2.0 HMI, wanting to do the upgrade to the 2.5. I currently have the io6 with Navigation, I know if I do the upgrade with the io5 I lose the factory navigation. I'm not so much concerned with that because I only use Waze/Google Maps anyways. But, will I lose some of the OnStar functionality (like locating where I parked or the tracking functionality if stolen) if I go with the io5 instead of the io6?
Thanks!