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B1055 2015 GMC Sierra Code - Right Rear Door Audio Output 4 Circuit

Quick Answer

The B1055 diagnostic trouble code (DTC) for a 2015 GMC Sierra specifically refers to an issue with the Right Rear Door Audio Output 4 Circuit. Common causes include Damaged wiring or connectors in the Right Rear Door Audio Output 4 Circuit, Faulty speaker in the right rear door, Malfunctioning audio control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B1055 2015 GMC Sierra indicates Right Rear Door Audio Output 4 Circuit.
Common causes
Common causes include Damaged wiring or connectors in the Right Rear Door Audio Output 4 Circuit, Faulty speaker in the right rear door, Malfunctioning audio control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code B1055 2015 GMC Sierra Description

The B1055 diagnostic trouble code (DTC) for a 2015 GMC Sierra specifically refers to an issue with the Right Rear Door Audio Output 4 Circuit. This code indicates that there is a malfunction in the circuit responsible for transmitting audio signals from the vehicle's audio system to the speaker located in the right rear door. When this circuit is compromised, it can result in a loss of sound output from that particular speaker, affecting the overall audio quality in the vehicle.

OBDII Code B1055 2015 GMC Sierra - Right Rear Door Audio Output 4 Circuit
B1055 2015 GMC Sierra Code - Right Rear Door Audio Output 4 Circuit

Common Causes of B1055 2015 GMC Sierra

  1. Damaged wiring or connectors in the Right Rear Door Audio Output 4 Circuit
  2. Faulty speaker in the right rear door
  3. Malfunctioning audio control module
  4. Water damage or corrosion in the circuit components
  5. Electrical issues within the vehicle's audio system

Symptoms of B1055 2015 GMC Sierra

  1. No sound output from the right rear door speaker
  2. Distorted sound coming from the right rear door speaker
  3. Intermittent sound cutting in and out from the right rear door speaker
  4. Audio system imbalance, with sound only coming from one side of the vehicle
  5. Error message or warning light on the vehicle's audio system display

How to Fix B1055 2015 GMC Sierra

  1. Begin by conducting a thorough inspection of the Right Rear Door Audio Output 4 Circuit, checking for any visible damage to the wiring or connectors.
  2. Test the speaker in the right rear door to determine if it is functioning correctly or if it needs to be replaced.
  3. Use a multimeter to test the continuity and voltage in the circuit to identify any specific areas of concern.
  4. If necessary, replace any damaged wiring, connectors, or components in the circuit to restore proper functionality.
  5. Clear the B1055 DTC from the vehicle's onboard computer using a diagnostic scan tool to reset the audio system and ensure the code does not reappear.

Cost to Fix B1055 2015 GMC Sierra

The typical repair costs for addressing the B1055 code in a 2015 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing damaged wiring or connectors, testing and potentially replacing the speaker, and addressing any other related issues could range from $150 to $500 in parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. For a more accurate estimate, it is recommended to consult with a local auto repair shop or dealership.

What does this mean?

Tech Notes for B1055 2015 GMC Sierra

B1055:01 Right Rear Door Audio Output 4 Circuit Short to Battery

B1055:02 Right Rear Door Audio Output 4 Circuit Short to Ground

B1055:04 Right Rear Door Audio Output 4 Circuit Open









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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1055 2015 GMC Sierra Code

1. What does the OBDII code B1055 mean on a 2015 GMC Sierra?

The B1055 code indicates an issue with the Right Rear Door Audio Output 4 Circuit, typically related to the audio signal or wiring for the rear right speaker.

2. What are common symptoms of the B1055 code in a GMC Sierra?

Symptoms may include no sound from the right rear speaker, distorted audio, or intermittent speaker operation.

3. What causes the B1055 code to trigger in a 2015 GMC Sierra?

The code can be caused by faulty wiring or connectors, a damaged speaker, or a malfunction in the audio amplifier or radio.

4. How can I diagnose the B1055 code on my GMC Sierra?

Start by inspecting the wiring and connectors for the right rear speaker, checking for damage, corrosion, or loose connections. You can also test the speaker and audio amplifier for proper functionality.

5. Can I still drive my GMC Sierra with the B1055 code present?

Yes, the B1055 code does not affect the drivability of your vehicle, but you may experience audio issues in the right rear speaker.

6. How do I fix the B1055 code on a 2015 GMC Sierra?

Repairs may include replacing a faulty speaker, repairing damaged wiring, cleaning corroded connectors, or replacing the audio amplifier if it is determined to be defective.

7. Will resetting the code fix the B1055 issue permanently?

Resetting the code may temporarily clear it, but if the underlying issue is not resolved, the code will return.

8. Does the B1055 code mean the right rear speaker is broken?

Not necessarily. While the speaker could be faulty, the issue may also lie in the wiring, connectors, or audio amplifier.

9. How much does it cost to repair the B1055 code on a GMC Sierra?

Costs can vary depending on the specific issue, but speaker replacement typically ranges from $50 to $200, while amplifier repairs or replacements can cost $300 or more.

10. Can I troubleshoot the B1055 code myself?

Yes, you can start by checking the wiring, connectors, and speaker for visible damage or testing the speaker with a multimeter. However, more complex issues may require professional diagnosis.

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