Circuit/System Verification
WARNING: This page is about a different car, the 2018 Cadillac XT5. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON/vehicle in Service Mode, radio ON.
- Verify that audio is heard clearly through all speaker channels when tuning radio to a known good station.
- If audio is not heard clearly
Refer to Speaker Malfunction (UQA) Speaker Malfunction (UQS)
- Go to next step: If audio is heard clearly
- If audio is not heard clearly
- Verify that the Connecting to OnStar® message is heard clearly through the audio system when the OnStar® blue button is pressed.
- If OnStar message is noisy or distorted
Refer to Circuit/System Testing
- Go to next step: If OnStar message is heard clearly
- If OnStar message is noisy or distorted
- All OK.