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B3930 2015 GMC Sierra Code - Child Security Lock Motors Circuit

Quick Answer

The B3930 code for a 2015 GMC Sierra relates to an issue with the Child Security Lock Motors Circuit. Common causes include Faulty child security lock motors, Wiring issues or shorts in the circuit, Corrosion or damage to connectors in the child security lock system. 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
B3930 2015 GMC Sierra indicates Child Security Lock Motors Circuit.
Common causes
Common causes include Faulty child security lock motors, Wiring issues or shorts in the circuit, Corrosion or damage to connectors in the child security lock system.
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 Aug 19, 2024
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Code B3930 2015 GMC Sierra Description

The B3930 code for a 2015 GMC Sierra relates to an issue with the Child Security Lock Motors Circuit. This code indicates that there is a malfunction in the circuit that controls the child safety lock motors on the vehicle's doors. The child safety lock system is designed to prevent children from accidentally opening the rear doors from the inside while the vehicle is in motion. When this circuit malfunctions, it can compromise the effectiveness of the child safety locks, potentially putting young passengers at risk.

OBDII Code B3930 2015 GMC Sierra - Child Security Lock Motors Circuit
B3930 2015 GMC Sierra Code - Child Security Lock Motors Circuit

Common Causes of B3930 2015 GMC Sierra

  1. Faulty child security lock motors.
  2. Wiring issues or shorts in the circuit.
  3. Corrosion or damage to connectors in the child security lock system.
  4. Malfunctioning control module responsible for managing the child security lock motors.

Symptoms of B3930 2015 GMC Sierra

  1. Rear doors not locking or unlocking properly.
  2. Inability to engage or disengage child safety locks.
  3. Warning light on the dashboard indicating a child safety lock system fault.
  4. Audible clicking or grinding noises when attempting to use the child safety locks.

How to Fix B3930 2015 GMC Sierra

  1. Diagnose the specific cause of the issue by conducting a thorough inspection of the child security lock system.
  2. Replace any faulty child security lock motors or damaged wiring.
  3. Repair or replace any corroded connectors in the circuit.
  4. Reset the control module and reprogram it, if necessary.
  5. Test the child security lock system to ensure proper functionality before returning the vehicle to service.

Cost to Fix B3930 2015 GMC Sierra

The typical repair costs for addressing a B3930 code related to the Child Security Lock Motors Circuit on a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, parts such as child security lock motors and wiring components may cost between $100 to $300, while labor charges can range from $100 to $300 or more. Overall, the total repair cost for this issue could fall within the $200 to $600 range. It's advisable to consult with a qualified mechanic or auto repair shop to obtain an accurate estimate based on the specific circumstances of your vehicle.

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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 B3930 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B3930 in a 2015 GMC Sierra related to the Child Security Lock Motors Circuit?

The common symptoms include malfunctioning child safety locks, inability to engage or disengage the child security locks, and potential issues with the power door locks.

2. What are the possible causes of OBDII code B3930 in a 2015 GMC Sierra?

Possible causes may include faulty child security lock motors, damaged wiring or connectors in the circuit, a malfunctioning control module, or a blown fuse related to the child security lock system.

3. How can I diagnose the Child Security Lock Motors Circuit issue causing OBDII code B3930 in my 2015 GMC Sierra?

You can diagnose the problem by inspecting the child security lock motors, checking the wiring and connectors for any damage, testing the control module, and verifying the fuse related to the child security lock system.

4. Can I repair OBDII code B3930 in my 2015 GMC Sierra related to the Child Security Lock Motors Circuit myself?

If you have experience with automotive electrical systems and the necessary tools, you may be able to repair the issue yourself by replacing faulty child security lock motors, repairing damaged wiring or connectors, or addressing any other identified problems in the circuit.

5. Are there any specific repair tips for fixing OBDII code B3930 in a 2015 GMC Sierra?

Ensure you have the correct replacement parts for the child security lock motors if they are faulty, use a multimeter to test the continuity of wiring and connectors, and refer to the vehicle's service manual for detailed troubleshooting and repair procedures.

6. Can OBDII code B3930 in a 2015 GMC Sierra related to the Child Security Lock Motors Circuit cause any safety concerns?

While the code itself may not pose immediate safety risks, a malfunctioning child security lock system can compromise the safety of passengers, especially children, in the vehicle. It is essential to address the issue promptly.

7. How does the Child Security Lock Motors Circuit work in a 2015 GMC Sierra?

The Child Security Lock Motors Circuit controls the operation of the child safety locks in the vehicle, allowing the driver to engage or disengage the locks to prevent children from opening the rear doors from inside the vehicle.

8. Is resetting the OBDII code B3930 in a 2015 GMC Sierra related to the Child Security Lock Motors Circuit a temporary solution?

Resetting the code may temporarily clear the error code from the vehicle's system, but if the underlying issue causing the code is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the problem.

9. Can extreme weather conditions affect the Child Security Lock Motors Circuit and trigger OBDII code B3930 in a 2015 GMC Sierra?

Extreme weather conditions such as extreme cold or heat can potentially affect the operation of the child security lock motors or the wiring in the circuit, leading to malfunctions and triggering the OBDII code B3930.

10. How much does it typically cost to repair OBDII code B3930 in a 2015 GMC Sierra related to the Child Security Lock Motors Circuit?

The cost of repairs can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to repair the problem yourself or take the vehicle to a professional mechanic. Costs may include parts, labor, and diagnostic fees.

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