searching the GM tech link...
I found this TSB...maybe useful if you are having MP3 radio problems.
Some owners may comment that when playing a CD, the radio displays the last track number for about 5 seconds, but there is no audio. The display changes to "READING" for about 15 seconds. Then it may play the CD or eject the CD with a "CHECK CD" message.
TIP: Each dealership will receive the "2005 US8 MP3 Radio Software Upgrade" CD through the Dealer World Delivery (DWD Box) process the week of November 29th, 2004.
Install the software upgrade CD into MP3 radio. Allow the software files to transfer completely. This should take 1-2 minutes. This installation should correct the condition noted above.
I found this TSB...maybe useful if you are having MP3 radio problems.
Some owners may comment that when playing a CD, the radio displays the last track number for about 5 seconds, but there is no audio. The display changes to "READING" for about 15 seconds. Then it may play the CD or eject the CD with a "CHECK CD" message.
TIP: Each dealership will receive the "2005 US8 MP3 Radio Software Upgrade" CD through the Dealer World Delivery (DWD Box) process the week of November 29th, 2004.
Install the software upgrade CD into MP3 radio. Allow the software files to transfer completely. This should take 1-2 minutes. This installation should correct the condition noted above.