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My Corvette mechanic printed out these instructions from GM's tech site. Unfortunately it didn't work for me because I didn't have the same screen displays as the instructions called for (don't know why). Maybe this will help someone else. Good luck.
This is the way to access the Nav menu for the C6 system. - There is a DIAGNOSIS screen that can be accessed when going in the NAV screen, then going into MENU and then touching the screen and holding your finger for 5 seconds a bit right to the yellow Nav. Menu that is on top (about half an inch right of the word Menu)
Once in the diagnosis screen, the instructions posted by Poker Pro may be available.
I have not tried this as my clock is working.
If someone is brave enough to try this, let us all know if it works.
This is the way to access the Nav menu for the C6 system. - There is a DIAGNOSIS screen that can be accessed when going in the NAV screen, then going into MENU and then touching the screen and holding your finger for 5 seconds a bit right to the yellow Nav. Menu that is on top (about half an inch right of the word Menu)
Once in the diagnosis screen, the instructions posted by Poker Pro may be available.
I have not tried this as my clock is working.
If someone is brave enough to try this, let us all know if it works.
Does not work with my '07 C6. Don't get the same screen menus.
Possible fix for no clock
