Silverado Classic 1500 2WD V8-5.3L (2007)
Clock: Customer Interest
Instruments Nav. Radio Clock/Clock Tab Malfunctions
Bulletin No.: 08-08-44-002
Date: February 15, 2008
TECHNICAL
Subject:
Navigation Radio Clock and/or Clock Tab Do Not Appear or Disappears Intermittently (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 Radio RPO UVB or U3U
Condition
Some customers may comment that the clock and/or the clock tab does not appear on the navigation screen.
Cause
This condition may be caused by a software anomaly, which causes the clock and/or clock tab to disappear during the ignition key cycle.
Correction
DO NOT REPLACE THE NAVIGATION RADIO.
Using the Tech 2(R), verify that the vehicle is equipped with one of the following radio part numbers:
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:
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
change driver locked out features when the vehicle is out of "Park"
"back" button on street address entry screen for entering street number
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 retain the disc for use in repairing future vehicles. DO NOT give the
software disc to the customer.