B
BoughtTheXLR
Guest
There are NO newer editions. Rev 8 is the 2008 map update, which includes few (if any) road changes after 2007 and often even earlier. (Around me, local roads built in 2004-2005 didn't make the update). While current updated data for the XLR's Denso Gen3 system is available, Cadillac has chosen to not spend any money on purchasing it and formatting it for our systems.5. The latest XLR nav disk is GM Part Number 25979939U, version number is Rev.8. Others have had limited success with newer editions, but I'm with JohnXLRV and use googlemaps on my phone as backup.