B3930 GMC 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 GMC 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.
Code B3930 GMC Description
What are the Possible Causes of the DTC B3930 GMC?
- 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 GMC?
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 GMC 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 GMC code?
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Need Help with the Code?
Get the B3930 GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- B3930 2014 GMC Sierra — Child Security Lock Motors Circuit
- B3930 2015 GMC Sierra — Child Security Lock Motors Circuit
- B3930 2016 GMC Sierra — Child Security Lock Motors Circuit
- B3930 2017 GMC Sierra — Child Security Lock Motors Circuit
- B3930 2018 GMC Sierra — Child Security Lock Motors Circuit
Frequently Asked Questions about B3930 GMC Code
1. What are the common symptoms of OBDII code B3930 GMC (Child Security Lock Motors Circuit)?
The common symptoms include malfunctioning child security locks, doors not locking or unlocking properly, and warning lights on the dashboard.
2. What can cause the OBDII code B3930 GMC to trigger?
The code B3930 is triggered when there is a malfunction in the child security lock motors circuit, which can be due to damaged wiring, faulty motors, or a problem with the control module.
3. How can I diagnose the issue related to the Child Security Lock Motors Circuit?
To diagnose the issue, you can start by checking the wiring connections, inspecting the child security lock motors, and using a diagnostic scanner to read the trouble codes.
4. Are there any DIY repair tips for fixing the B3930 code on a GMC vehicle?
If you have experience with automotive electrical systems, you can try checking and repairing any damaged wiring, replacing faulty motors, or resetting the control module to clear the code.
5. Can the B3930 code affect the overall safety of the vehicle?
While the B3930 code is related to the child security lock motors, it can impact the overall security and safety of the vehicle, especially if the doors are not locking properly.
6. Is it safe to continue driving with the B3930 trouble code present?
It is not recommended to drive with the B3930 trouble code present, as it can compromise the security of the vehicle and potentially lead to other issues with the door locking system.
7. How much does it typically cost to repair the B3930 code on a GMC vehicle?
The cost of repairing the B3930 code can vary depending on the extent of the issue and the specific repairs needed, but it may range from a few hundred dollars to over a thousand dollars at a dealership.
8. Can I reset the B3930 trouble code myself, or do I need a professional mechanic?
You can attempt to reset the B3930 trouble code yourself using a diagnostic scanner, but if the underlying issue is not addressed, the code is likely to return. Consulting a professional mechanic is recommended for a proper diagnosis and repair.
9. Are there any recalls or service bulletins related to the B3930 code in GMC vehicles?
It is advisable to check with a GMC dealership or the manufacturer's website for any recalls or service bulletins related to the B3930 trouble code to see if there are any known issues or solutions provided.
10. How can I prevent the B3930 trouble code from reoccurring in the future?
To prevent the B3930 trouble code from reoccurring, it is essential to ensure regular maintenance of the child security lock system, address any wiring or motor issues promptly, and follow the manufacturer's recommended service schedule for your vehicle.
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