AutoCodes – GMC – B3930 2016 GMC Sierra

B3930 2016 GMC Sierra Code - Child Security Lock Motors Circuit

Quick Answer

The Body Control Module (BCM) controls the Child Security Lock Relay when it receives a command to lockout the rear doors. Common causes include Faulty Child Security Lock Relay, Child Security Lock Relay harness is open or shorted, Child Security Lock Relay circuit poor electrical connection. 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 2016 GMC Sierra indicates Child Security Lock Motors Circuit.
Common causes
Common causes include Faulty Child Security Lock Relay, Child Security Lock Relay harness is open or shorted, Child Security Lock Relay circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 193
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 17, 2023
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Code B3930 2016 GMC Sierra Description

The Body Control Module (BCM) controls the Child Security Lock Relay when it receives a command to lockout the rear doors. The relay will apply voltage to both child security circuits at the rear door latches to disable the interior door handles. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to voltage, short to ground or an open/high resistance on the child security lock disable relay control circuit.
OBDII Code B3930 2016 GMC Sierra - Child Security Lock Motors Circuit - AutoCodes.com
B3930 2016 GMC Sierra Code - Child Security Lock Motors Circuit

What are the Possible Causes of the DTC B3930 2016 GMC Sierra?

  • Faulty Child Security Lock Relay
  • Child Security Lock Relay harness is open or shorted
  • Child Security Lock Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B3930 2016 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3930 2016 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 B3930 2016 GMC Sierra code?

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Need Help with the Code?

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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 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code B3930 on a 2016 GMC Sierra related to the Child Security Lock Motors Circuit?

- The common symptoms include non-functional child security locks, inability to engage or disengage the child security locks, and warning lights on the dashboard.

2. What are the possible causes of OBDII code B3930 on a 2016 GMC Sierra?

- The code B3930 can be triggered by issues such as faulty child security lock motors, damaged wiring in the circuit, or a malfunctioning child security lock switch.

3. How can I diagnose the Child Security Lock Motors Circuit issue causing OBDII code B3930 on my 2016 GMC Sierra?

- To diagnose the problem, you can use a diagnostic scanner to retrieve the OBDII code, inspect the child security lock motors and wiring for any visible damage, and test the child security lock switch for proper functionality.

4. Are there any simple repair tips for fixing OBDII code B3930 on a 2016 GMC Sierra?

- Some simple repair tips include checking and repairing any damaged wiring in the circuit, replacing faulty child security lock motors, and ensuring proper connections to the child security lock switch.

5. Can I drive my 2016 GMC Sierra with OBDII code B3930 related to the Child Security Lock Motors Circuit?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the child security locks for passenger safety.

6. Is it possible to reset OBDII code B3930 on a 2016 GMC Sierra without fixing the underlying issue?

- While you can clear the code temporarily, it is not recommended to reset it without addressing the root cause, as the problem may persist and affect the functionality of the child security lock system.

7. How much does it typically cost to repair OBDII code B3930 on a 2016 GMC Sierra at a dealership or repair shop?

- The cost of repairing OBDII code B3930 can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor at a dealership or repair shop.

8. Are there any recalls or technical service bulletins related to OBDII code B3930 on a 2016 GMC Sierra?

- It is recommended to check with GMC or a certified dealership for any recalls or technical service bulletins related to OBDII code B3930 to see if the issue is covered under warranty or a special service campaign.

9. How long does it typically take to repair OBDII code B3930 related to the Child Security Lock Motors Circuit on a 2016 GMC Sierra?

- The repair time can vary based on the specific issue, but it may take anywhere from 1 to 3 hours to diagnose and fix the problem with the child security lock motors circuit.

10. Can I attempt to repair OBDII code B3930 on my 2016 GMC Sierra myself, or should I seek professional help?

- If you have experience with automotive electrical systems and diagnostics, you can attempt to repair the issue yourself by following manufacturer guidelines. Otherwise, it is recommended to seek professional help to ensure the problem is properly addressed.

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