AutoCodes – GMC – B3137 GMC

B3137 GMC Code - All Door Lock Circuit Low

Quick Answer

The outputs to the door lock actuators are controlled by the Body Control Module (BCM). Common causes include Faulty Inoperative Door Lock Actuator, Inoperative Door Lock Actuator harness is open or shorted, Inoperative Door Lock Actuator 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: B3137 GMC indicates All Door Lock Circuit Low.
Common causes: Common causes include Faulty Inoperative Door Lock Actuator, Inoperative Door Lock Actuator harness is open or shorted, Inoperative Door Lock Actuator 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.

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Code Popularity 686

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 Mar 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3137 GMC Description

The outputs to the door lock actuators are controlled by the Body Control Module (BCM). When the BCM receives a lock input from a door lock switch, or a keyless entry transmitter, it applies battery positive voltage to the door lock actuator lock control circuit, a ground to the door lock actuator unlock control, and the driver door lock actuator unlock control circuits. When the BCM receives an unlock input from a door lock switch, it applies battery positive voltage to the door lock actuator unlock control, the driver door lock actuator unlock control circuits, and a ground to the door lock actuator lock control circuit. When the BCM receives a single Unlock input from a keyless entry transmitter, it applies battery positive voltage to the driver door lock actuator unlock control circuit and a ground to the door lock actuator lock control circuit to unlock the driver door. A second Unlock input from the transmitter applies battery positive voltage to the door lock actuator unlock control circuit, and a ground to the door lock actuator lock control circuit to unlock the passenger door or doors.

OBDII Code B3137 GMC - All Door Lock Circuit Low - AutoCodes.com — B3137 GMC Code - All Door Lock Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3137 GMC?

Faulty Inoperative Door Lock Actuator
Inoperative Door Lock Actuator harness is open or shorted
Inoperative Door Lock Actuator circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3137 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 B3137 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.

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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 B3137 GMC Code

1. What are the common symptoms of OBDII code B3137 GMC (All Door Lock Circuit Low)?

- Common symptoms include difficulty locking or unlocking doors, intermittent door lock operation, and inoperative power door locks.

2. What are possible causes of OBDII code B3137 GMC (All Door Lock Circuit Low)?

- Possible causes include a faulty door lock actuator, damaged wiring or connectors in the door lock circuit, and a malfunctioning door lock switch.

3. How can I diagnose OBDII code B3137 GMC (All Door Lock Circuit Low)?

- To diagnose this code, you may need to inspect the door lock actuators, check the wiring and connectors for damage, and test the door lock switch for proper operation using a multimeter.

4. Can a DIY enthusiast repair OBDII code B3137 GMC (All Door Lock Circuit Low) at home?

- Depending on the root cause, a DIY enthusiast with automotive repair experience may be able to repair this code by replacing a faulty door lock actuator, repairing damaged wiring, or fixing a malfunctioning door lock switch.

5. Are there any safety precautions to consider when working on OBDII code B3137 GMC (All Door Lock Circuit Low)?

- Prior to starting any repairs, ensure the vehicle is turned off and the battery is disconnected to prevent electrical hazards. Exercise caution when handling electrical components and wiring to avoid injury or damage.

6. What are the typical repair costs associated with resolving OBDII code B3137 GMC (All Door Lock Circuit Low)?

- The repair costs for this code can vary depending on the extent of the issue and the specific components that need to be replaced. It's recommended to obtain quotes from reputable automotive service centers for an accurate estimate.

7. Can OBDII code B3137 GMC (All Door Lock Circuit Low) cause any other problems with the vehicle?

- While this code primarily relates to issues with the door lock circuit, unresolved problems can potentially drain the vehicle's battery, affect the security of the vehicle, or lead to inconvenience due to malfunctioning door locks.

8. Is it necessary to reset the OBDII system after repairing OBDII code B3137 GMC (All Door Lock Circuit Low)?

- After resolving the underlying issue causing this code, it's recommended to clear the OBDII system using a scan tool to reset the code and ensure proper functioning of the door lock circuit.

9. Can extreme weather conditions impact OBDII code B3137 GMC (All Door Lock Circuit Low)?

- Yes, extreme weather conditions such as extreme cold or heat can potentially exacerbate existing issues with the door lock circuit, leading to intermittent operation or complete failure of the door locks.

10. How can regular maintenance help prevent OBDII code B3137 GMC (All Door Lock Circuit Low) from occurring?

- Regular maintenance, including inspecting and cleaning the door lock components, checking the wiring for damage, and addressing any door lock issues promptly, can help prevent the occurrence of this code and ensure proper operation of the door locks.