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B1065 2016 GMC Sierra Code - Left Rear Door Audio Output 5 Circuit

Quick Answer

The B1065 diagnostic trouble code (DTC) for a 2016 GMC Sierra specifically refers to an issue with the Left Rear Door Audio Output 5 Circuit. Common causes include Faulty speaker in the left rear door, Damaged wiring connecting the audio unit to the left rear door speaker, Malfunctioning audio unit sending incorrect signals to the left rear door speaker. 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
B1065 2016 GMC Sierra indicates Left Rear Door Audio Output 5 Circuit.
Common causes
Common causes include Faulty speaker in the left rear door, Damaged wiring connecting the audio unit to the left rear door speaker, Malfunctioning audio unit sending incorrect signals to the left rear door speaker.
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 14, 2024
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Code B1065 2016 GMC Sierra Description

The B1065 diagnostic trouble code (DTC) for a 2016 GMC Sierra specifically refers to an issue with the Left Rear Door Audio Output 5 Circuit. This code indicates a problem with the audio system in the left rear door of the vehicle. The audio output circuit is responsible for transmitting sound signals from the audio unit to the speaker in the left rear door. When this circuit malfunctions, it can result in a loss of sound from that particular speaker, affecting the overall audio quality in the vehicle.

OBDII Code B1065 2016 GMC Sierra - Left Rear Door Audio Output 5 Circuit
B1065 2016 GMC Sierra Code - Left Rear Door Audio Output 5 Circuit

Common Causes of B1065 2016 GMC Sierra

  1. Faulty speaker in the left rear door.
  2. Damaged wiring connecting the audio unit to the left rear door speaker.
  3. Malfunctioning audio unit sending incorrect signals to the left rear door speaker.
  4. Defective audio output circuit in the left rear door.

Symptoms of B1065 2016 GMC Sierra

  1. No sound coming from the left rear door speaker.
  2. Distorted sound or crackling noises from the left rear door speaker.
  3. Intermittent sound output from the left rear door speaker.
  4. Audio cutting in and out from the left rear door speaker.
  5. Error message on the audio unit related to the left rear door audio output.

How to Fix B1065 2016 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a diagnostic tool to pinpoint the exact source of the problem.
  2. Inspect the speaker in the left rear door for any visible damage or signs of malfunction. Replace the speaker if necessary.
  3. Check the wiring connecting the audio unit to the left rear door speaker for any breaks, frays, or loose connections. Repair or replace the wiring as needed.
  4. Test the audio unit to ensure it is sending the correct signals to the left rear door speaker. Replace the audio unit if it is found to be faulty.
  5. If the issue lies with the audio output circuit in the left rear door, repair or replace the circuit to restore proper audio functionality.

Cost to Fix B1065 2016 GMC Sierra

The typical repair costs for addressing the B1065 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a speaker can cost between $50 to $200, while repairing or replacing wiring may range from $100 to $300. If the audio unit needs to be replaced, this can cost anywhere from $200 to $500. Labor costs for these repairs can add an additional $80 to $150 per hour. It's important to note that actual repair costs can fluctuate based on factors such as location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on the individual circumstances of the vehicle.

What does this mean?

Tech Notes for B1065 2016 GMC Sierra

B1065:01 Left Rear Door Audio Output 5 Circuit Short to Battery

B1065:02 Left Rear Door Audio Output 5 Circuit Short to Ground

B1065:04 Left Rear Door Audio Output 5 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 B1065 2016 GMC Sierra Code

1. What does OBDII code B1065 mean on a 2016 GMC Sierra?

Code B1065 indicates an issue with the Left Rear Door Audio Output 5 Circuit, which is part of the vehicle's audio system responsible for sending signals to the left rear speaker.

2. What are the symptoms of code B1065 in a 2016 GMC Sierra?

Common symptoms include no sound or distorted audio from the left rear speaker, or the entire audio system may not function properly.

3. What causes code B1065 to appear on a 2016 GMC Sierra?

Possible causes include a faulty left rear speaker, damaged wiring or connectors in the audio circuit, or a malfunctioning radio/amplifier module.

4. Can a blown fuse cause code B1065 in a GMC Sierra?

It’s unlikely, but you should still check for blown fuses in the audio system as part of the diagnostic process to rule out power supply issues.

5. How do you diagnose code B1065 on a 2016 GMC Sierra?

Start by inspecting the left rear speaker, wiring, and connectors for damage or disconnection. If no issues are found, test the audio output signal from the radio or amplifier.

6. Can I still drive my GMC Sierra with code B1065?

Yes, the vehicle is safe to drive, but you may experience audio issues, specifically with the left rear speaker.

7. How do you fix code B1065 on a 2016 GMC Sierra?

Repairs may include replacing the left rear speaker, repairing or replacing damaged wiring, or replacing the radio/amplifier module if it’s determined to be the cause.

8. Is the left rear speaker always the problem with code B1065?

Not always. While the speaker may be faulty, the issue could also lie in the wiring, connectors, or the audio control module.

9. How much does it cost to fix code B1065 on a GMC Sierra?

Repair costs vary depending on the issue. Replacing a speaker may cost $50-$200, while repairing wiring or replacing the radio/amplifier could cost significantly more.

10. Can resetting the code fix the B1065 issue on a 2016 GMC Sierra?

Clearing the code may temporarily reset the system, but the issue will return if the underlying problem is not resolved.

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