Hers does that, I think, I will try tomorrow. I remember her going on about something like this. The 8.3 disc won't work in the Denali because its a different Nav. If you have 5.0c, then you have the latest available disc. I think the 5.0 is a different (older) disc than 5.0c. Upgrading to the "c" might make a difference.
no it's a 5.0c i just checked the box. I looked into this 8.3 and it appears it can also be used in the following.. right off of an ebay supplier..
besides the caddy's 07-10
2007 2008 2009 2010 GMC Acadia
2007 2008 2009 Saturn Outlook
2008 2009 2010 Buick Enclave
2007 2008 2009 2010 Buick Lucerne
2007 2008 2009 2010 Chevrolet Equinox
2009 2010 Chevrolet Traverse
2007 2008 2009 Pontiac Torrent
2007 2008 2009 Saturn Vue