GM Service Manual Online
For 1990-2009 cars only

MP3/WMA Disc

MP3/WMA Format

If you burn an MP3 disc on a personal computer:

    • Make sure the MP3 files are recorded on a CD-R disc.
    • Standard audio, MP3 files, and WMA files can be mixed on one CD.
    • Make sure playlists have a.m3u or.wpl extension, other file extensions might not work.
    • Files can be recorded with a variety of fixed or variable bit rates. Song title, artist name, and album is available for display by the radio when recorded using ID3 tags version 1 and 2.
    • Create a folder structure that makes it easy to find songs while driving. Organize songs by albums using one folder for each album. Each folder or album should contain 18 songs or less.
    • Make sure to finalize the disc when burning an MP3 disc, using multiple sessions. It is usually better to burn the disc all at once.

The player is able to read and play a maximum of 253 folders, 50 playlists, 20 sessions, and 949 files. Long file names, folder names, or playlist names may use more disc memory space than necessary. To conserve space on the disc, minimize the length of the file, folder, or playlist names. An MP3 CD that was recorded using no file folders can also be played. The system can support up to 11 folders in depth, though, keep the depth of the folders to a minimum in order to keep down the complexity and confusion in trying to locate a particular folder during playback. If a CD contains more than the maximum of 253 folders, 50 playlists, 20 sessions, and 949 files, the player allows access and navigates up to the maximum, but all items over the maximum will not play.

Root Directory

The root directory is treated as a folder. If the root directory has compressed audio files, the directory displays as F1 ROOT. All files contained directly under the root directory are accessed prior to any root directory folders. However, playlists (Px) are always accessed before root folders or files.

Empty Directory or Folder

If a root directory or a folder exists somewhere in the file structure that contains only folders/subfolders and no compressed files directly beneath them, the player advances to the next folder in the file structure that contains compressed audio files. The empty folder does not display.

No Folder

When the CD contains only compressed files, the files are located under the root folder. The next and previous folder functions do not function on a CD that was recorded without folders or playlists. When displaying the name of the folder the radio displays ROOT.

When the CD contains only playlists and compressed audio files, but no folders, all files are located under the root folder. The folder down and the folder up buttons search playlists (Px) first and then goes to the root folder. When the radio displays the name of the folder the radio displays ROOT.

Order of Play

Tracks are played in the following order:

    • If CD audio tracks are available they will be played first, otherwise play begins from the first track in the first playlist and continues sequentially through all tracks in each playlist. When the last track of the last playlist has played, play continues from the first track of the first playlist.
    • If the CD does not contain any playlists, then play begins from the first track under the root directory. When all tracks from the root directory have played, play continues from files according to their numerical listing. After playing the last track from the last folder, play begins again at the first track of the first folder or root directory.

When play enters a new folder, the display does not automatically show the new folder name unless the folder mode has been chosen as the default display. See DISPL (display) later in this section for more information. The new track name displays.

File System and Naming

The song name that displays is the song name that is contained in the ID3 tag. If the song name is not present in the ID3 tag, then the radio displays the file name without the extension (such as.mp3) as the track name.

Track names longer than 32 characters or four pages are shortened. Parts of words on the last page of text and the extension of the file name does not display.

Preprogrammed Playlists

Preprogrammed playlists that were created using WinAmp™, MusicMatch™, or Real Jukebox™ software can be accessed, however, they cannot be edited using the radio. These playlists are treated as special folders containing compressed audio song files.

Playing an MP3/WMA

Insert a CD partway into the slot, label side up. The player pulls it in, and READING displays. The CD should begin playing and the CD symbol displays. To insert a CD while the ignition is off, first press the button or the DISPL knob.

If the ignition or radio is turned off with a CD in the player it stays in the player. When the ignition or radio is turned on, the CD starts to play where it stopped, if it was the last selected audio source.

As each new track starts to play, the track number and song title displays.

1 FLD (Previous Folder): Press to go to the first track in the previous folder. Press 1 FLD while in folder random mode to go to the first track in the previous folder and random the tracks in that folder.

2 FLD (Next Folder): Press to go to the first track in the next folder. Press 2 FLD while in folder random mode to go to the first track in the next folder and random the tracks in that folder.

3 REV (Reverse): Press and hold to reverse quickly within a track. Press and hold 3 REV for less than two seconds to reverse at 10 times the normal playing speed. Press and hold 3 REV for more than two seconds to reverse at 20 times the normal playing speed. Release 3 REV to play the passage. REV and the elapsed time of the track displays.

4 FWD (Forward): Press and hold to advance quickly within a track. Press and hold 4 FWD for less than two seconds to advance at 10 times the normal playing speed. Press and hold 4 FWD for more than two seconds to advance at 20 times the normal playing speed. Release 4 FWD to play the passage. FWD and the elapsed time of the track displays.

6 RDM (Random): Press and release to play the tracks of a current folder or playlist, in random order. FLDR RDM displays. Once all of the tracks a current folder or playlist have played the system moves on to the next folder or playlist and play all of the tracks in random order. To play all tracks on the CD in random order, press and hold 6 RDM for two seconds. A beep sounds and DISC RDM displays. This feature does not work with playlists. When in random, press and release either SEEK arrow to go to the next or previous random track. Press and release 6 RDM again to turn off random play. NO RDM displays.

SEEK : Press the left SEEK arrow to go to the start of the previous track. Press the right SEEK arrow to go to the start of the next track. Press either SEEK arrow for more than two seconds to search the previous or next tracks at two tracks per second. Release the button to stop searching and to play the track.

TUNE : Turn to fast track reverse or advance through the tracks in all folders or playlists. The track number and file name displays for each track. Turn TUNE while in random to fast track reverse or advance the tracks in sequential order.

DISPL (Display): Press to switch between track mode, folder/playlist mode, and time of day mode. The display shows only eight characters, but there can be up to four pages of text. If there are more than eight characters in the song, folder, or playlist name, they are displayed if DISPL is not pressed again, pressing DISPL within two seconds goes to the next display mode.

    • Track mode displays the current track number and the ID3 tag song name.
    • Folder/playlist mode displays the current folder or playlist number and the folder/playlist name.
    • Time of day mode displays the time of day and the ID3 tag song name.

To change the default on the display, press the DISPL knob until the desired display appears, then press and hold this knob for two seconds. The radio produces one beep and the selected display becomes the default.

INFO (Information): INFO displays when a current track has ID3 tag information. Press INFO to display the artist name and album contained in the tag. INFO disappears from the display when the information in the ID3 tag has finished.

BAND: Press to listen to the radio when a CD is playing. The inactive CD remains inside the radio for future listening.

CD AUX (Auxiliary): Press to play a CD when listening to the radio. The CD symbol displays when a CD is loaded.

(Eject): Press to eject a CD. Eject can activate while either the ignition or the radio is off. CDs can be loaded while the ignition and the radio is off if this button is pressed first.