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B1065 2015 GMC Sierra Code - Left Rear Door Audio Output 5 Circuit

Quick Answer

The B1065 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Left Rear Door Audio Output 5 Circuit. Common causes include Damaged wiring or connectors in the audio output circuit, Faulty speaker in the left rear door, Malfunctioning audio amplifier. 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 2015 GMC Sierra indicates Left Rear Door Audio Output 5 Circuit.
Common causes
Common causes include Damaged wiring or connectors in the audio output circuit, Faulty speaker in the left rear door, Malfunctioning audio amplifier.
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 2015 GMC Sierra Description

The B1065 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Left Rear Door Audio Output 5 Circuit. This code indicates a problem with the audio output circuit in the left rear door of the vehicle. The audio output circuit is responsible for transmitting sound signals from the audio system to the speakers in the left rear door. When this circuit malfunctions, it can lead to issues with the sound system in the vehicle.

OBDII Code B1065 2015 GMC Sierra - Left Rear Door Audio Output 5 Circuit
B1065 2015 GMC Sierra Code - Left Rear Door Audio Output 5 Circuit

Common Causes of B1065 2015 GMC Sierra

  1. Damaged wiring or connectors in the audio output circuit
  2. Faulty speaker in the left rear door
  3. Malfunctioning audio amplifier
  4. Water damage to the audio system components
  5. Electrical issues in the vehicle's audio system

Symptoms of B1065 2015 GMC Sierra

  1. No sound coming from the left rear door speakers
  2. Distorted sound from the left rear door speakers
  3. Intermittent sound from the left rear door speakers
  4. Audio system cutting in and out
  5. Error message on the audio system display

How to Fix B1065 2015 GMC Sierra

  1. Begin by inspecting the wiring and connectors in the audio output circuit for any signs of damage. Repair or replace any damaged components.
  2. Test the speaker in the left rear door to determine if it is functioning correctly. Replace the speaker if necessary.
  3. Check the audio amplifier for any faults or malfunctions. Repair or replace the amplifier as needed.
  4. Clear the DTC from the vehicle's computer using a diagnostic scan tool.
  5. Test the audio system to ensure that the issue has been resolved and that sound is coming from the left rear door speakers as expected.

Cost to Fix B1065 2015 GMC Sierra

The typical repair costs for addressing the B1065 code in a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as wiring, connectors, speakers, or an audio amplifier can range from $100 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour. The total cost of the repair can therefore range from $200 to $1000 or more, depending on the extent of the issue and the specific components that need to be replaced. It is advisable to consult with a qualified mechanic or auto repair shop for a more precise estimate based on the specific circumstances of the vehicle.

What does this mean?

Tech Notes for B1065 2015 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 2015 GMC Sierra Code

1. What does the OBD-II code B1065 mean on a 2015 GMC Sierra?

The code B1065 indicates an issue with the Left Rear Door Audio Output 5 Circuit, typically related to the wiring or speaker in the left rear door.

2. What are the common symptoms of the B1065 code?

Common symptoms include no audio from the left rear door speaker, distorted sound, or intermittent audio output.

3. What causes the B1065 code to appear?

The most common causes are faulty wiring or connections, a damaged speaker, or a malfunctioning audio amplifier.

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

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

5. How do I diagnose the B1065 code?

Start by inspecting the wiring and connectors to the left rear door speaker for damage or corrosion. Then test the speaker and the audio amplifier for proper function.

6. How can I fix the B1065 code on my 2015 GMC Sierra?

Repairs may include replacing the left rear door speaker, repairing or replacing damaged wiring, or replacing the audio amplifier if it is faulty.

7. Is the B1065 code covered under warranty?

It depends on your vehicle’s warranty terms. If the audio system or wiring is still under warranty, repairs might be covered.

8. Can a blown fuse cause the B1065 code?

While unlikely, it’s worth checking the fuses related to the audio system as a precaution, as a blown fuse can disrupt power to the circuit.

9. How much does it cost to repair the B1065 code?

Repair costs vary depending on the issue, but replacing a speaker may cost $50–$150, while fixing wiring or replacing the amplifier could cost $200–$500 or more.

10. Can I fix the B1065 code myself?

If you’re comfortable with basic electrical troubleshooting and have the proper tools, you may be able to fix wiring or replace the speaker yourself. Otherwise, it’s best to consult a professional.

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