Well now...
Stopped at the Dealership and picked up my new Nav DVD. It is 4.1c (20857425) as the GMNAV rep told me. The disk I ran to Florida on was 4.0c (25974486).
Switching the disks - did NOTHING!
There is absolutely NO Visual or Functional Difference between 4.0c and 4.1c that I can see or find! So, I am thinking the only thing updated was the POI List, and maybe some Map updates.
No Clock appeared, and touching the "ETA" block did not allow me to change Hr/Min to Time of Arrival. So I am assuming the Nav Unit installed in the 09's is different hardware then prior years, and therefore doesn't support those functions.
Anyway - now I have a 4.0c DVD that I'm not using! ... Anyone want to buy it off of me?
