Sierra Classic 2500 4WD V8-6.0L (2007)
Navigation System: Customer Interest
Navigation Radio - Various Malfunctions
TECHNICAL
Bulletin 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:
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The clock and/or clock tab does not appear or disappears intermittently on the navigation screen.
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A split screen, points of interest or an exit list may appear on the navigation screen while driving.
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The text color may be difficult to see on light color backgrounds.
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The address book entry characters may be hard to find.
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The customer may not have the ability to scroll through the XM radio categories while the vehicle is in motion.
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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.
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"I Agree" screen appears every ignition cycle.
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Destination entry screens do not have a "back" button to return to previous page.
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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.
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15882766
