B1065 2015 GMC Sierra Code - Left Rear Door Audio Output 5 Circuit
Quick Answer
The Media Oriented Systems Transport (MOST) is a high-speed multimedia network technology. Common causes include Faulty Audio Amplifier, Faulty Left Rear Door Speaker, Left Rear Door Speaker harness is open or shorted. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B1065 2015 GMC Sierra indicates Left Rear Door Audio Output 5 Circuit.
- Common causes
- Common causes include Faulty Audio Amplifier, Faulty Left Rear Door Speaker, Left Rear Door Speaker harness is open or shorted.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B1065 2015 GMC Sierra Description
The audio amplifier is a participant on the MOST network. The audio amplifier receives audio input and control information from the MOST bus.
Each of the audio output channel circuits (+) and (−), at the audio amplifier have a DC bias voltage that is approximately one-half of the battery voltage. When using a DMM, each of the audio output channel circuits will measure approximately 6.5V DC. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound.
What are the Possible Causes of the DTC B1065 2015 GMC Sierra?
- Faulty Audio Amplifier
- Faulty Left Rear Door Speaker
- Left Rear Door Speaker harness is open or shorted
- Left Rear Door Speaker circuit poor electrical connection
How to Fix the DTC B1065 2015 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
B1065:02 Left Rear Door Audio Output 5 Circuit Short to Ground
B1065:04 Left Rear Door Audio Output 5 Circuit Open
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1065 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the B1065 2015 GMC Sierra code?
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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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