B1035 2015 GMC Sierra Code - Right Front Door Audio Output 2 Circuit
Quick Answer
Vehicles without Amplifier: Each of the audio output channel circuits (+) and (-), at the radio have a DC bias voltage that is approximately one-half of battery voltage. Common causes include Faulty Radio Unit, Faulty Audio Amplifier (If equipped), Faulty Right Front Door Speaker. 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
- B1035 2015 GMC Sierra indicates Right Front Door Audio Output 2 Circuit.
- Common causes
- Common causes include Faulty Radio Unit, Faulty Audio Amplifier (If equipped), Faulty Right Front Door Speaker.
- 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 B1035 2015 GMC Sierra Description
Each of the audio output channel circuits (+) and (-), at the radio have a DC bias voltage that is approximately one-half of battery voltage. When using a DMM, each of the audio output channel circuits will measure approximately 6.5 V 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. The frequency (Hz) of the AC voltage signal is directly related to the frequency of the input (audio source playing) to the audio system. Both the DC bias voltage and the AC voltage signals are needed for the audio system to properly produce sound.
Vehicles with Amplifier:
The Media Oriented Systems Transport (MOST) is a high-speed multimedia network technology. The serial MOST bus uses a ring topology and synchronous data communication to transmit audio, video, data and control information between any devices attached.
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 B1035 2015 GMC Sierra?
- Faulty Radio Unit
- Faulty Audio Amplifier (If equipped)
- Faulty Right Front Door Speaker
- Right Front Door Speaker harness is open or shorted
- Right Front Door Speaker circuit poor electrical connection
How to Fix the DTC B1035 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
B1035:02 Right Front Door Audio Output 2 Circuit Short to Ground
B1035:04 Right Front Door Audio Output 2 Circuit Open
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1035 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.
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Frequently Asked Questions about B1035 2015 GMC Sierra Code
1. What does the OBDII code B1035 mean on a 2015 GMC Sierra?
Code B1035 indicates a problem with the Right Front Door Audio Output 2 Circuit, which is responsible for transmitting audio signals to the right front door speaker.
2. What are the symptoms of the B1035 code on a 2015 GMC Sierra?
Common symptoms include no sound or distorted audio from the right front door speaker, or intermittent audio signal issues.
3. What causes the B1035 code to appear?
Potential causes include a faulty speaker, damaged or loose wiring in the circuit, a malfunctioning audio amplifier, or a software issue in the infotainment system.
4. How can I diagnose the B1035 code on my vehicle?
Start by inspecting the right front door speaker and its wiring for visible damage, check the connections at the amplifier, and use a scan tool to confirm the code and perform further diagnostics.
5. Can a blown fuse cause the B1035 code?
While unlikely, a blown fuse related to the audio system could contribute to the issue. It’s worth checking the fuses if other electrical problems are present.
6. How do I fix the B1035 code on a 2015 GMC Sierra?
Repair steps may include replacing a faulty speaker, repairing or replacing damaged wiring, or reprogramming or replacing the audio amplifier if necessary.
7. Is the B1035 code a serious issue?
This code typically affects audio system performance and is not critical to vehicle operation, but it can be inconvenient and should be addressed to restore proper audio function.
8. Can I continue driving with the B1035 code active?
Yes, you can continue driving, but you may experience degraded or non-functional audio from the right front speaker until the issue is resolved.
9. How much does it cost to fix the B1035 code?
Repair costs vary depending on the issue. Replacing a speaker may cost $50–$150, while amplifier repairs or wiring fixes could range from $100–$500 or more.
10. Can I fix the B1035 code myself?
If you’re comfortable with basic electrical work, you can attempt to inspect and repair wiring or replace the speaker. For more complex issues like amplifier faults, professional assistance may be required.
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