: 2004 Navigation DVD question

04-23-09, 01:24 PM
I drive a 2004 CTS-V and it has original navigation, that is sometimes inaccurate, as roads have changed.
Which disk to I need?
I went to the GM site and it gave me two options when I put in my VIN.
Can someone explain the difference between the two and the cheapest way to get either of them. Is one of them updating the firmware, and the other the actual maps? There is a $100 price difference.

-2009 NA CTS (2007 MY & prior)
North America 09320NA $199.00

-SALE! 25813528 2007 CTS/CTS-V
North America 25813528 $99.00

04-23-09, 02:19 PM
Looks to me like the $99 disc is 2007 data, and the $199 disc is the most recent 2009 data.

04-23-09, 03:31 PM
okay that makes a lot of sense.

will the maps look different at all? or the same, just more accurate? what about the interface of the radio/xm/cd? does this update that?

Is a firmware upgrade included in the disk? Based on what I have read, it seems like this is necessary, is that something separate?

04-24-09, 08:41 PM
I don't believe there is anything on the DVD but maps and point of interest data. Should look the same but have anything that changed over the last couple of years. A firmware upgrade will require a different disc...probably a CD as it shouldn't be so much data to require a DVD.