B1055 GMC - Audio Output 4 Right Rear Circuit
- Faulty Speaker Output 4
- Speaker Output 4 harness is open or shorted
- Speaker Output 4 circuit poor electrical connection
- Audio Amplifier
Tech notesB1055 01 Audio Output 4 Right Rear Circuit Short to Battery
B1055 02 Audio Output 4 Right Rear Circuit Short to Ground
B1055 04 Audio Output 4 Right Rear Circuit Open
- Engine Light ON (or Service Engine Soon Warning Light)
B1055 Gmc DescriptionThe Up-Level radio (UQA) supplies 4 channels of audio to an amplifier. The amplifier supplies 6 input signal channels to 8 speakers. The radio sets a current status for this Diagnostic Trouble Code (DTC) when a short to ground, short to voltage or an open is detected on any of the 6 speaker channel outputs from the radio.
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