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B1025 2016 GMC Sierra Code - Left Front Door Audio Output 1 Circuit

Quick Answer

The B1025 diagnostic trouble code (DTC) for the 2016 GMC Sierra refers to an issue with the Left Front Door Audio Output 1 Circuit. Common causes include Wiring issues such as a short circuit or an open circuit, Faulty left front door speaker, Malfunctioning audio amplifier in the left front door. 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
B1025 2016 GMC Sierra indicates Left Front Door Audio Output 1 Circuit.
Common causes
Common causes include Wiring issues such as a short circuit or an open circuit, Faulty left front door speaker, Malfunctioning audio amplifier in the left front door.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B1025 2016 GMC Sierra Description

The B1025 diagnostic trouble code (DTC) for the 2016 GMC Sierra refers to an issue with the Left Front Door Audio Output 1 Circuit. This code indicates that there is a problem with the electrical circuit that controls the audio output in the left front door of the vehicle. The audio output circuit is responsible for transmitting audio signals from the vehicle's audio system to the speakers in the left front door. When this circuit malfunctions, it can lead to a variety of issues with the vehicle's audio system, affecting the driver and passengers' ability to listen to music, radio, or other audio sources.

OBDII Code B1025 2016 GMC Sierra - Left Front Door Audio Output 1 Circuit
B1025 2016 GMC Sierra Code - Left Front Door Audio Output 1 Circuit

Common Causes of B1025 2016 GMC Sierra

  1. Wiring issues such as a short circuit or an open circuit.
  2. Faulty left front door speaker.
  3. Malfunctioning audio amplifier in the left front door.
  4. Loose or corroded electrical connections in the audio output circuit.
  5. Water damage or moisture intrusion affecting the left front door audio components.

Symptoms of B1025 2016 GMC Sierra

  1. Loss of audio output from the left front door speaker.
  2. Distorted or poor-quality sound from the left front door speaker.
  3. Imbalanced audio experience within the vehicle.
  4. Intermittent audio output from the left front door speaker.
  5. Audio cutting in and out from the left front door speaker.

How to Fix B1025 2016 GMC Sierra

  1. Begin by inspecting the wiring harness and electrical connections in the left front door audio output circuit for any visible damage, corrosion, or loose connections. Repair or replace any damaged wiring or connectors.
  2. Test the left front door speaker for proper functionality by connecting it to a known working audio source. Replace the speaker if it is found to be faulty.
  3. Check the audio amplifier in the left front door for any signs of malfunction. Test the amplifier's output with a multimeter to determine if it is functioning correctly. Replace the amplifier if necessary.
  4. Clear the diagnostic trouble codes stored in the vehicle's computer system using a scan tool after completing the repairs. Test the audio system to ensure that the issue has been resolved.
  5. If the problem persists, further diagnostics may be necessary to pinpoint the exact cause of the audio output circuit malfunction, such as testing the vehicle's audio control module or inspecting additional components in the audio system.

Cost to Fix B1025 2016 GMC Sierra

The typical repair costs for addressing the B1025 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost of parts for this repair can range from $50 to $200, with labor costs adding an additional $100 to $300. This estimate includes the cost of replacing any faulty components, such as the left front door speaker or audio amplifier, as well as the labor required to diagnose and repair the issue.

What does this mean?

Tech Notes for B1025 2016 GMC Sierra

B1025:01 Left Front Door Audio Output 1 Circuit Short to Battery

B1025:02 Left Front Door Audio Output 1 Circuit Short to Ground

B1025:04 Left Front Door Audio Output 1 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 B1025 2016 GMC Sierra Code

1. What does the OBDII code B1025 mean on a 2016 GMC Sierra?

Code B1025 indicates an issue with the Left Front Door Audio Output 1 Circuit, which may affect the audio system's performance.

2. What are the common symptoms of code B1025 in a 2016 GMC Sierra?

Symptoms may include no sound or distorted audio from the left front door speaker.

3. What causes the B1025 code to appear?

Common causes include a faulty left front door speaker, damaged wiring or connectors, or issues with the audio amplifier.

4. Can a blown speaker trigger the B1025 code?

Yes, a blown or damaged left front door speaker can cause this code to appear.

5. How do I diagnose the B1025 code on my GMC Sierra?

Start by inspecting the left front door speaker, checking for damaged wiring, loose connections, and testing the audio output with a multimeter.

6. Is it safe to drive with the B1025 code active?

Yes, it is safe to drive, but the audio system may not function correctly on the affected side.

7. How can I fix the B1025 code?

Repairs may include replacing the left front door speaker, repairing damaged wiring, or reprogramming/updating the audio system module.

8. Can a bad audio amplifier cause the B1025 code?

Yes, a malfunctioning audio amplifier can disrupt the left front door audio circuit and trigger this code.

9. How much does it cost to repair the B1025 code on a 2016 GMC Sierra?

Depending on the issue, repairs can range from $50 for a simple wiring fix to over $200 for a new speaker or amplifier.

10. Do I need to reset the system after repairing the B1025 code?

Yes, clearing the code with an OBDII scanner after completing the repair ensures the system recognizes the fix.

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