AutoCodes – GMC – B3130 GMC

B3130 GMC Code - All Doors Unlock Circuit

Quick Answer

The Body Control Module (BCM) supplies a 12-volt signal to the lock and unlock signal circuits of the driver and passenger door lock switches. Common causes include Faulty Door Latch Assembly, Door Latch Assembly harness is open or shorted, Door Latch Assembly 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: B3130 GMC indicates All Doors Unlock Circuit.
Common causes: Common causes include Faulty Door Latch Assembly, Door Latch Assembly harness is open or shorted, Door Latch Assembly 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,540

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 11, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B3130 GMC Description

The Body Control Module (BCM) supplies a 12-volt signal to the lock and unlock signal circuits of the driver and passenger door lock switches. When the appropriate switch is pressed, a contact within the door lock switch closes providing a ground path for the signal circuit. The BCM will detect the voltage drop in the signal and will command the doors to perform the lock or unlock functions. The BCM may also receive a LOCK or UNLOCK command from the Keyless Entry Control Module.
The BCM, upon receipt of a lock switch lock or unlock signal, will supply voltage to the door lock actuator lock or unlock control circuits. Since the opposite side of the lock actuator is connected to the ground through the other lock actuator control circuit, the doors will then lock or unlock as commanded. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground or open/high resistance on a door latch control circuit.

OBDII Code B3130 GMC - All Doors Unlock Circuit - AutoCodes.com — B3130 GMC Code - All Doors Unlock Circuit

What does this mean?

What are the Possible Causes of the DTC B3130 GMC?

Faulty Door Latch Assembly
Door Latch Assembly harness is open or shorted
Door Latch Assembly circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3130 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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3130 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 B3130 GMC code?

Need more information on how to fix the B3130 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3130 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

B3130 2014 GMC Sierra — All Doors Unlock Circuit
B3130 2015 GMC Sierra — All Doors Unlock Circuit
B3130 2016 GMC Sierra — All Doors Unlock Circuit
B3130 2017 GMC Sierra — All Doors Unlock Circuit
B3130 2018 GMC Sierra — All Doors Unlock Circuit

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 B3130 GMC Code

1. What are the common symptoms of OBDII code B3130 GMC (All Doors Unlock Circuit)?

- The common symptoms include all doors failing to unlock with the remote key fob or interior door switch.

2. What are the potential causes of OBDII code B3130 GMC?

- The code B3130 GMC is typically caused by a malfunction in the wiring, connectors, or the door lock actuator.

3. How can I diagnose the issue related to OBDII code B3130 GMC?

- Diagnose by checking the wiring harness for any visible damage, testing the door lock actuator functionality, and inspecting the connectors for corrosion or loose connections.

4. Can a faulty remote key fob cause OBDII code B3130 GMC?

- Yes, a faulty remote key fob transmitting incorrect signals can trigger the B3130 GMC code.

5. How can I repair OBDII code B3130 GMC on my GMC vehicle?

- Repair the issue by repairing or replacing any damaged wiring, connectors, or the door lock actuator as needed.

6. Is OBDII code B3130 GMC a serious issue that requires immediate attention?

- While the code may not pose a safety risk, it is recommended to address the issue promptly to ensure proper functioning of the door locking system.

7. Can a DIY enthusiast fix OBDII code B3130 GMC, or should I seek professional help?

- Depending on your skill level and access to tools, a DIY enthusiast can attempt to diagnose and repair the B3130 GMC code. However, seeking professional help is advisable if you are unsure.

8. Are there any preventive measures to avoid OBDII code B3130 GMC in the future?

- Regularly inspecting the door locking system, maintaining the remote key fob, and addressing any issues promptly can help prevent the recurrence of the B3130 GMC code.

9. Will resetting the OBDII system clear the B3130 GMC code temporarily?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

10. Can extreme weather conditions affect the occurrence of OBDII code B3130 GMC?

- Yes, extreme weather conditions such as excessive heat or cold can impact the performance of the door locking system and potentially trigger the B3130 GMC code.