The reasons why the Buick GL8 cannot play songs when connected via Bluetooth may include the car navigation system or phone being muted, a mismatch between the phone's music playback programming and the car model's pairing code, not enabling multimedia music, or the phone's media audio not being turned off, which causes signal interference with the Bluetooth function. The volume on the car navigation system or phone may not be turned on. In this case, you need to enter the phone's settings, find the sound settings, locate the media option, and turn up the media volume. The same applies to the car navigation system. Some phones' music playback programming does not match the pairing codes of certain car models, so they can only make calls but not play music. In this case, you can try connecting with another phone or changing the Bluetooth playback frequency band to resume normal usage. If the Bluetooth multimedia music is not enabled, you need to find the multimedia option on the screen and enter Bluetooth to play music. If the phone's media audio is not turned off, it can also cause signal interference with the Bluetooth function, preventing music playback. In this case, go to the phone's Bluetooth settings interface, where there are two options: phone audio and media audio. After connecting to the car's Bluetooth, both options are enabled by default. Turn off the media audio while keeping the phone audio enabled. This ensures that Bluetooth calls, car music playback, and phone navigation announcements do not interfere with each other.
