AutoCodes – GMC – B0031 GMC

B0031 GMC Code - Second Row Left Frontal Stage 1 Deployment Control

Quick Answer

When the ignition switch is turned to RUN position, Sensing and Diagnostic Module (SDM) performs tests to diagnose critical internal malfunctions. Common causes include Faulty Second Row Left Frontal Air Bag, Second Row Left Frontal Air Bag harness is open or shorted, Second Row Left Frontal Air Bag 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: B0031 GMC indicates Second Row Left Frontal Stage 1 Deployment Control.
Common causes: Common causes include Faulty Second Row Left Frontal Air Bag, Second Row Left Frontal Air Bag harness is open or shorted, Second Row Left Frontal Air Bag 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 1,472

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0031 GMC Description

When the ignition switch is turned to RUN position, Sensing and Diagnostic Module (SDM) performs tests to diagnose critical internal malfunctions. SDM then performs deployment loop voltage out of range test and deployment loop resistance measurement test. If voltage out of range test detects a short to voltage condition, the resistance measurement test will not be performed.

OBDII Code B0031 GMC - Second Row Left Frontal Stage 1 Deployment Control - AutoCodes.com — B0031 GMC Code - Second Row Left Frontal Stage 1 Deployment Control

What does this mean?

What are the Possible Causes of the DTC B0031 GMC?

Faulty Second Row Left Frontal Air Bag
Second Row Left Frontal Air Bag harness is open or shorted
Second Row Left Frontal Air Bag circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0031 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 B0031 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 B0031 GMC code?

Need more information on how to fix the B0031 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0031 GMC code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B0031 GMC Code

1. What are the common symptoms of OBDII code B0031 GMC?

The common symptoms of OBDII code B0031 GMC include the airbag warning light illuminating on the dashboard and a possible message indicating an issue with the Second Row Left Frontal Stage 1 Deployment Control.

2. What are the possible causes of OBDII code B0031 GMC?

Possible causes of OBDII code B0031 GMC include faulty Second Row Left Frontal Stage 1 Deployment Control module, damaged wiring or connectors in the airbag system, or a malfunctioning airbag sensor.

3. How can I diagnose OBDII code B0031 GMC?

Diagnosing OBDII code B0031 GMC usually involves using a professional OBDII scanner to retrieve the specific fault code, inspecting the airbag system components for visible damage, and testing the Second Row Left Frontal Stage 1 Deployment Control module for proper functionality.

4. Can I still drive my vehicle with OBDII code B0031 GMC?

It is not recommended to drive your vehicle with OBDII code B0031 GMC present, as it indicates a potential issue with the airbag system, which is crucial for occupant safety in the event of a collision.

5. How can I repair OBDII code B0031 GMC?

Repairing OBDII code B0031 GMC may involve replacing the faulty Second Row Left Frontal Stage 1 Deployment Control module, repairing or replacing damaged wiring or connectors, or addressing any other underlying issues identified during the diagnostic process.

6. Is it safe to reset the OBDII code B0031 GMC without repairing the issue?

Resetting the OBDII code B0031 GMC without addressing the underlying problem is not recommended, as it may lead to the airbag system not functioning properly in the event of an accident, potentially putting occupants at risk.

7. Can a DIY enthusiast fix OBDII code B0031 GMC at home?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code B0031 GMC, it is recommended to consult with a professional mechanic or technician to ensure the airbag system is properly repaired and functioning safely.

8. Is OBDII code B0031 GMC a common issue in GMC vehicles?

OBDII code B0031 GMC related to the Second Row Left Frontal Stage 1 Deployment Control can occur in GMC vehicles, particularly if there are issues with the airbag system components or sensors.

9. How can I prevent OBDII code B0031 GMC from occurring again?

Regular maintenance of the airbag system, including checking for damaged wiring, loose connectors, and ensuring proper functioning of airbag modules, can help prevent the recurrence of OBDII code B0031 GMC.

10. Can OBDII code B0031 GMC be a serious safety concern?

Yes, OBDII code B0031 GMC is a serious safety concern as it indicates a potential problem with the airbag system, which is designed to protect occupants in the event of a collision. Prompt diagnosis and repair are essential to ensure the airbags deploy correctly when needed.