Diagnostic Aids
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
Malfunctions may include a flickering or distorted screen or a blank screen.
A momentary spike in volume upon start up may be due to the radio accessing the guest profile before switching to an established customer user profile. The radio will remember the set volume level the last time it was shut down in the guest profile mode, which is a normal operating characteristic. To alleviate the issues turn the radio on and proceed to the guest profile. Turn the volume level down to a lower level and power down the vehicle, the radio will retain the lower volume level upon the next start up.