Sierra 1500 2WD V6-4.3L (2008)
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15882767
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15940102
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15940103
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25797978
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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.
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Clock font size
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Text color on light colored screens
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Split screen icon to minimize the "Points of Interest" popup and "Exit" popup
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Destination keyboard characters moved from page 2 to page 1.
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"Back" button on street address entry screen for entering street number
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User selectable lock-outs for XM Categories, music Navigator, MP3 folders, address book, POI's and Turn list.
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"I Agree" screen changed from every ignition cycle to once in every 50 ignition cycles.
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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
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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.
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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.
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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.