Navigation/Radio - Error Messages/Low Volume
Bulletin No.: 06-08-44-037Date: October 24, 2006
TECHNICAL
Subject:
Navigation Radio Operation - Low Radio/OnStar Volume, Map Disk Error, Clock Does Not Update In New Time Zone (Reprogram Radio and/or Refer to Navigation Supplement-Owner's Manual)
Models:
2007 Chevrolet Avalanche, Suburban, Tahoe
2007 GMC Denali, Denali XL, Yukon, Yukon XL
with Navigation Radio with CD/MP3 (RPO U3U) or Navigation Radio with CD/DVD/MP3 (RPO UVB)
Condition
Some customers may comment on one or more of the following navigation (U3U) and (UVB) radio concerns:
Low volume from either the radio and/or OnStar systems.
Radio displays "Map Disk Error" when trying to operate navigation portion of radio.
Clock will not update itself when the vehicle enters new time zones.
Correction
Do not replace radio for these concerns.
Low Volume Concern
Verify that the Navigation radio has been properly programmed. If reprogramming is needed, use the latest calibration available in TTS2000 version 2.75 or later (Calibrations 15260986 w/Y91 or 15260985 w/o Y91).
Be sure to scan for and note any DTCs prior to programming that may be associated with any other items on the repair order.
Make sure TIS and the Tech 2(R) are updated with the latest software.
Battery voltage is greater than 12 volts but less than 16 volts. The battery must be charged before programming if the battery voltage is low.
After programming is complete, be sure to check and clear any DTCs that may have set as a result of the programming.
Map Disk Error
This may be caused by operator error. Confirm that the map disk is installed in the correct slot located behind the navigation screen. To access this slot, go to the Navigation menu and select the "load map" CD button. Specific instructions and location of this slot can be found in the Navigation Supplement Owner's Manual.
Clock Will Not Update in New Time Zone
This is normal operation and the radio should not be replaced for this concern. Refer customers to the Navigation Supplement Owner's Manual regarding this feature, which provides the instructions on how to manually change the clock setting.
Warranty Information
For vehicles repaired under warranty, use table.
Disclaimer