GM Service Manual Online
For 1990-2009 cars only

Traffic Announcement (TA)

The traffic announcement (TA) provides an interruption of the audio in order to allow the broadcast of a traffic announcement. In order to enable or disable the TA mode press the ALT-TA button. The TA light is on when the TA is enabled. When TA is enabled and the receiver is not tuned in to a station broadcasting TA, the receiver seeks the next available station broadcasting traffic announcements. If the receiver does not find a station, the following actions occur:

    • The receiver returns to the previously tuned station.
    • The receiver cancels the TA mode.
    • When you tune to a station that broadcasts traffic announcements, the TA light illuminates.

The following sequence occurs when a TA is detected:

  1. If the TA is referenced with EON, the receiver tunes to the referenced network. Only stations with an identical PI code to that of the reference network are accepted.
  2. If a playback is in use, the receiver immediately switches the audio to the turner. The playback device will pause.
  3. The display indicates TRAFFIC ANNOUNCEMENT.
  4. The volume is set to the larger of the following values:
  5. • The minimum default volume
    • The current listening volume
  6. You may adjust the volume when the traffic announcement plays.
  7. When the traffic announcement is complete, the previously selected functions return to the user set positions.

Traffic Program (TP)

The Traffic Program (TP) feature allows the radio to receive Traffic Announcements (TA). If the TP is turned off, the radio does not receive the TA announcements.

Emergency Announcement

The Emergency Announcements feature provides an interruption of the audio in order to broadcast a weather/disaster alert.

The following sequence occurs when an alert is detected:

  1. If you are using a playback device, the receiver immediately switches the audio to the tuner. The playback device pauses.
  2. The display indicates one of the following items:
  3. • ALARM for export applications
    • ALERT for domestic applications
  4. The volume sets to the larger value of the following items:
  5. • The TA default
    • The current listening level
  6. During the alert, the user may adjust the volume.
  7. When the emergency announcement is complete, the previously selected functions return to the user set positions.

Alternate Frequency (AF)

The AF feature allows the receiver to automatically tune to an alternate station when the signal quality of the currently tuned station falls below an acceptable level. Press ALT-AF in order to enable or disable the AF mode. The preset RDS stations are still available. If you are unable to obtain a signal, the radio will perform a PI seek.

Format Seek and Scan

The Program Type (PTY) information identifies a station by program format (TALK, NEWS, ROCK, etc.). The format type allows the user to seek or scan only stations with the selected format. Use the format type in conjunction with the seek and scan. For domestic receivers, the US RDS standard allows for the transmission of an optional Program Type Name (PTY-N). If the PTY-N feature is included in the radio, then you may define the program more specially using an 8  character identifier. The search process does not use this type of identification, but displays after the receiver stops on a station with the entered PTY category. You may select a format type while the radio is in the tuner mode. When you press FMT LIST up or down the display shows the previously selected format. The default format is ANY TYPE. While the format is displayed, press the FMT LIST up or down in order to allow the user to step through the format list. The display of the selected format list remains for 5 seconds. Press any other button in order to cancel the display of the select format list.