UPDATE: Chevrolet updated the C6 Clock issue with a new Technical Service Bulletin (19-NA-26) issued on May 18, 2020 that completely revises how to fix it. We have an updated post from Paul with those new instructions here.
We started hearing about C6 Corvettes with Navigation suddenly losing their clocks following a battery disconnect sometime early last year and we are somewhat surprised on how long it has taken to get a fix for this. Luckily, there is now a process to restore the clock function to your navigation screens thanks to our friend Paul Koerner aka TheCorvetteMechanic!
Paul is a GM World Class Technician who wrenches on Corvettes and other GM vehicles at Key Chevrolet in Middletown, CT. I had asked him about this after a friend’s C6 with Nav suddenly lost its clock and I remember him telling me to be patient as he said there would be a fix coming for this at some point.
On his Facebook page, Paul shares the following video to announce that a fix is now available and the good news is that its something you can do yourself for pennies! All you need is a computer, a blank CD-R, and these instructions and you’re all set.
Here’s the step-by-step instructions:
Click the link below and download the file:
Burn the LOADING.KWI to a BLANK CD-R. Once this is completely burned and finished, 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 disc by pressing DVD Map Database Eject Key. Insert the Software Update Disc in the DVD Map Database Slot
The update will start automatically. You will see a progress bar on the screen. The update takes about 2 minutes. The vehicle logo will be seen once the update is completed.
Once you see the Corvette logo, remove the update disc and REINSTALL YOUR MAP DISC!
THIS IS NOT A MAP UPDATE! THIS IS ONLY FOR YOUR CLOCK BEING BLANK! If you have any further questions, check out this tread at TheCorvetteMechanic.com
All the best, and THANK YOU TO CORVETTE ENGINEERING for this fix.
TheCorvetteMechanic / Facebook
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