Lucerne V8-4.6L (2008)
Navigation Radio Software Update For All Other Vehicles (2007-2008 Chevrolet Equinox, Pontiac Torrent; 2007-2008 GMC Acadia, Saturn
OUTLOOK, Saturn VUE 2008 Buick Enclave and 2006-2008 Buick Lucerne)
Note
If the radio has software calibration 100F (2008 MY radios or earlier) or higher (e.g. 100G, etc.), the software corrections contained on the update
disc 20774148 are already installed and this update is not required. The screen will display the following message "The disc installed is not a MAP
DVD" THIS IS NOT AN ERROR MESSAGE. To verify the software version follow step 1 and 2 below.
1. Start the engine, with the gear shift in PARK, wait until the audio or navigation screen is displayed after the opening screen (you may have to press
the OK button on the Caution screen).
2. Proceed to the FM audio screen and confirm the current navigation software version by pressing the MENU and SEEK UP (1) buttons
simultaneously. If the screen switches, select FM to display the software version. Performing this operation may take a couple of attempts for the
radio to detect the simultaneous button press. Refer to the illustration above, which shows the two buttons that need to be pressed. The navigation
software version is the first four characters, reading from the left, located in the middle of the screen.
3. If the navigation software version is 100F (2008 MY radios or earlier) or higher, the software corrections contained on the update disc 20774148
are already installed and this update is not required. However, if the string of letters across the screen are NON-ASCII letters, this indicates an
internal communication problem with the RADIO. Refer to the Diagnostic Starting Point-Cellular, Entertainment, and Navigation procedure to
begin the diagnosis of the customer concern. For all other navigation software versions proceed to step four to continue the software update.
Important
Do not turn off the power or remove the update disc while the software update is in progress.
Important
This software update procedure will erase the customer's Address and Destination entries from memory.
4. Open the front display by pressing and holding the EJECT (1) button for approximately 15 seconds. Eject the map disc from the revealed map
DVD slot by pressing the EJECT (2) button located beneath the revealed map DVD slot. Load the software update disc, P/N 20774148, in map
drive (3).
5. Close the front display by using both hands at the four corners of the display until the display fits securely into the radio. Do not push on the touch
screen to close. The display will show "Update in Progress" and upon successful software update, the screen will transition to a blue screen with
"The disc installed is not a MAP DVD" displayed on the screen. It will take approximately five minutes to load the new software.
6. Confirm that the new navigation software version is either 101B or 100F using the procedure in step two above.
7. Verify proper operation of the Navigation Radio.
