Fix for C6 Navigation Clock 

 We all know the issues with the clocks going blank. Here is the fix from Corvette engineering

Click ths link to download the file.
https://tis2web.akamai.gm.com/radio/corvette_gps_my_05_10_fix.zip
Unzip the file.
Burn the file, LOADING.KWI, to a BLANK CD-R. (DO NOT use a DVD, it won't work)
Once complete, go to your Corvette

1) Make sure the vehicle is outside and the engine is running.

2) On the radio display, press the Open/Close Faceplate Key

3) Eject the map DVD. Insert the Update Disc. The update will start automatically. You will see a progress bar on the screen. The update takes about 2 minutes. You will see the C6 logo when the update is complete.
Remove the update disc and reinstall the MAP disc. It will load and the clock function is restored.