GM TSB said:
Bulletin No.: 09-08-44-019A
Date: January 10, 2013
Subject: Intermittent Navigation or Radio Screen Blank After Vehicle Starts, Radio Controls May Not Function
2007-2009 Chevrolet Corvette
Equipped with Navigation Radio RPO U3U
The Dealership will have 15 days to complete the software update and
return the "loaner" disc to GM Brand Quality. If it is not returned
within the specified time period, the Dealership will be charged.
This bulletin is being revised to make the Subject more concise, update
the information in the Correction section and add an Attention statement
to inform the technician that they have 15 days to complete the
software update and return the disc to GM Brand Quality. Please discard
Corporate Bulletin Number 09-08-44-019 (Section 08 - Body and
Some customers may comment that when starting the vehicle, the navigation or radio screen stays blank.
The technician may notice that restarting the vehicle may result in the radio operating properly.
This condition may be caused by a radio software timing anomaly.
DO NOT replace the navigation radio for this condition.
Wearing latex gloves is recommended while performing the software
update in order to avoid fingerprints on the disc and the radio.
Update the radio audio software with the disc using the following procedure:
||Technicians are to contact Technical Assistance (TAC) when this condition exists in order to obtain a "loaner" copy of the radio audio software update disc.
||TAC will record all of the necessary case information and send an electronic copy to GM Brand Quality for the "loaner" disc.
The update CANNOT be performed with the ignition in the accessory mode.
||Turn ON the ignition, or start the engine.
After the Corvette logo appears on the radio screen, there is a delay
before the radio controls will function. This is a normal condition
while the radio comes online.
||Press the Eject button at the bottom center of the radio bezel to open the front panel.
||Press the DVD button next to the bottom slot to eject the navigation
radio map disc. Remove and carefully set aside the map disc.
||If the map disc is not loaded in the radio, you will only hear the DVD eject mechanism operate but a disc will not eject. Wait for the mechanism to stop running before proceeding to the next step.
DO NOT turn off power to the radio while the software is loading.
||Insert the "loaner" copy of the radio audio software update disc into the bottom DVD slot.
The radio display will turn off while the software is loading.
||WAIT four to five minutes for the software update to complete. WHEN the software update is complete, the radio will reboot and the Corvette logo will appear.
||Press the DVD button next to the bottom slot to eject the disc.
Remove the disc and return it within the specified time period to GM
||Insert the customer's navigation radio map disc into the bottom slot. Touch the "I agree" screen button.|