Navigation Radio - Various Malfunctions
TECHNICALBulletin No.: 08-08-44-002B
Date: April 14, 2009
Subject:
Navigation Radio Clock and/or Clock Tab Do Not Appear or Disappears Intermittently, Split Screen, Points of Interest or Exit List Appears While Driving, Text Color May Be Difficult to See, Address Book Characters May Be Hard to Find, Cannot Scroll Through XM Radio Categories, I Agree Screen Lockouts (Update Navigation Radio with New Software)
Models:
2007-2008 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2007-2008 GMC Sierra, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL
2008 HUMMER H2
with Navigation Radio RPO UVB or U3U
Supercede:
This bulletin is being revised to add additional customer concerns and to update the list of Operating Characteristics the software addresses. Please discard Corporate Bulletin Number 08-08-44-002A (Section 08 - Body & Accessories).
Condition
Some customers may comment about any of the following conditions:
- The clock and/or clock tab does not appear or disappears intermittently on the navigation screen.
- A split screen, points of interest or an exit list may appear on the navigation screen while driving.
- The text color may be difficult to see on light color backgrounds.
- The address book entry characters may be hard to find.
- The customer may not have the ability to scroll through the XM radio categories while the vehicle is in motion.
- The customer may not be able to scroll through music navigator, MP3 folders, address book, POI's and Turn List when the vehicle is in motion.
- "I Agree" screen appears every ignition cycle.
- Destination entry screens do not have a "back" button to return to previous page.
- Customer is not able to adjust screen brightness while vehicle is in motion.
Cause
These conditions may be caused by a software anomaly.
Correction
Using the Tech 2(R), verify that the vehicle is equipped with one of the following radio part numbers:
Important
If the vehicle is not equipped with one of the following radio part numbers, disregard this bulletin.
- 15882766
- 15882767
- 15940102
- 15940103
- 25797978
- 25834072
Update the Navigation Radio's software to correct this condition. This software upgrade will also update some operating characteristics on the Navigation Radio. The following functions or displays may be affected:
Important
Inform the customer that stored destinations and radio presets may not be retained during programming.
- Clock font size
- Text color on light colored screens
- Split screen icon to minimize the "Points of Interest" popup and "Exit" popup
- Destination keyboard characters moved from page 2 to page 1.
- "Back" button on street address entry screen for entering street number
- User selectable lock-outs for XM Categories, music Navigator, MP3 folders, address book, POI's and Turn list.
- "I Agree" screen changed from every ignition cycle to once in every 50 ignition cycles.
- Screen Brightness adjustment not disabled while vehicle is in motion.
How to Obtain Nav Software Update Disc (P/N 25956121 - software version 0B92):
Software discs are available through the GM Nav Disc Center. Dealers should treat the disc like a special tool and retain the disc for use in repairing future vehicles. DO NOT give the software disc to the customer.
Navigation Software Update Procedure:
Use the following procedure to update the Navigation Radio software using the Nav Software Update Disc P/N 25956121 (software version 0B92):
Important
- This software update can only be used to update the navigation radios specified in this bulletin. DO NOT use this software to update any other vehicle's navigation radio.
- The Map DVD will be needed to verify the system operation after the software update has been performed. Use the vehicle's existing map DVD.
- It is recommended to wear latex gloves while performing the software update, to avoid fingerprints on the product and discs.
The software update requires using the map DVD slot. The update will not work if the update disc is inserted in the top slot (CD or CD/DVD audio slot).
Notice
DO NOT stop the engine until all tasks are completed. The software update MUST be performed with the engine RUNNING and the gear position in PARK. If the vehicle is turned off prior to the software update being completed, the process may not work again and a new Navigation Radio may be required.
1. Start the engine with the gear selector in PARK. Wait until the audio or caution screen is displayed after the opening screen.
2. Press the "NAV" hard key.
3. Press "OK" soft key.
4. Press the "MENU" hard key.
5. Press the "NAV" soft key.
6. Press the "MAP DATABASE INFORMATION" soft key.
7. Press the "CHANGE" soft key.
8. The navigation radio automatically ejects the map DVD. Remove the ejected disc.
Important
DO NOT put the disc in the top slot. DO NOT force the display to close. The display screen will remain in the open position until the update is complete.
9. Load the update disc into the slot located behind the display screen by inserting it partially until the system pulls it in.
10. The screen "PREPARING TO LOAD SYSTEM SOFTWARE" will be displayed while the update is loading. The update should take approximately 4 minutes.
11. After the system restarts, press the "EJECT" soft key to eject and remove the software update disc.
Important
Dealers should retain the software update disc for their use.
12. Load the map DVD into the same slot located behind the display screen, DO NOT put in the top slot.
13. Press the "CLOSE" soft key.
14. Press the "OK" soft key.
15. Press the "MENU" hard key.
Important
The clock will not be displayed until it is confirmed by completing step 16.
16. Turn the engine OFF. Open and close the driver's door. Wait for 10 minutes.
Important
Due to the load time of the system, there may be a short delay before the "Map Screen" appears.
17. Restart the engine. After the map screen is displayed, verify that the clock is visible and touch the map screen to confirm that it can be scrolled. If the clock does not appear, repeat programming.
Important
The GPS location will start out in Washington DC and once learned, will show the correct location of the vehicle. Learning the GPS may take up to 10 minutes, depending on the vehicle's location.
18. Ensure that the GPS signal has been received and the navigation map shows the correct location for the vehicle.
19. Verify that the destination search area is properly displayed.
1. Press the "DESTINATION" hard key.
2. Press "CHANGE SEARCH AREA" soft key.
3. Select the correct area for the vehicle's location.
Warranty Information
For vehicles repaired under warranty, use the table above.
Disclaimer