B1055 GMC - Audio Output 4 Right Rear Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Speaker Output 4
  • Speaker Output 4 harness is open or shorted
  • Speaker Output 4 circuit poor electrical connection
  • Audio Amplifier

Tech notes

B1055 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

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B1055 Gmc Description

The 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.
OBDII Code B1055 Gmc - Audio Output 4 Right Rear Circuit - AutoCodes.com

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B1055 GMC Comments

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