AutoCodes – GMC – B1347 GMC

B1347 GMC Code - Driver Front Airbag Resistance Too Low

Quick Answer

When the ignition switch is turned to ON, the Sensing and Diagnostic Module (SDM) will perform turn-on test to diagnose critical malfunctions within SDM itself. Common causes include Faulty Driver Front Airbag, Driver Front Airbag harness is open or shorted, Driver Front Airbag 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: B1347 GMC indicates Driver Front Airbag Resistance Too Low.
Common causes: Common causes include Faulty Driver Front Airbag, Driver Front Airbag harness is open or shorted, Driver Front Airbag 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 1,056

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 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1347 GMC Description

When the ignition switch is turned to ON, the Sensing and Diagnostic Module (SDM) will perform turn-on test to diagnose critical malfunctions within SDM itself.
Upon passing these test ignition and deployment loop voltages are measured to ensure that they are within their normal voltage ranges. The SDM monitors the voltages at the driver low and the passenger low to detect shorts to ground or voltage in the deploy loops.
The SDM checks the wiring connection to the driver airbag module by letting the infinitesimal current flow through the internal circuit and verify the resistance.

OBDII Code B1347 GMC - Driver Front Airbag Resistance Too Low - AutoCodes.com — B1347 GMC Code - Driver Front Airbag Resistance Too Low

What does this mean?

What are the Possible Causes of the DTC B1347 GMC?

Faulty Driver Front Airbag
Driver Front Airbag harness is open or shorted
Driver Front Airbag circuit poor electrical connection
Faulty Clockspring

How to Fix the DTC B1347 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 B1347 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 B1347 GMC code?

Need more information on how to fix the B1347 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1347 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 B1347 GMC Code

1. What are the common symptoms of OBDII code B1347 GMC (Driver Front Airbag Resistance Too Low)?

The common symptoms include the airbag warning light illuminating on the dashboard and a diagnostic trouble code (DTC) being stored in the vehicle's computer.

2. What are the possible causes of OBDII code B1347 GMC?

Possible causes of this code may include a fault in the driver front airbag system, a damaged airbag module, faulty wiring or connections, or issues with the airbag sensor.

3. How serious is the OBDII code B1347 GMC?

This code indicates a potentially serious issue with the driver front airbag system. It is crucial to address this problem promptly to ensure the proper functioning of the airbag in case of an accident.

4. How can I diagnose the cause of OBDII code B1347 GMC?

Diagnosing this code typically involves using a professional OBDII scanner to retrieve the DTC, inspecting the airbag system components for damage or faults, and testing the wiring and connections for continuity.

5. Can I drive my vehicle with OBDII code B1347 GMC?

It is not recommended to drive the vehicle with this code present, as it indicates a problem with the driver front airbag system, which is a critical safety component in case of a collision.

6. How can I repair OBDII code B1347 GMC?

Repairing this code may involve replacing faulty components in the driver front airbag system, such as the airbag module or sensor, repairing damaged wiring or connections, and clearing the DTC from the vehicle's computer.

7. Will OBDII code B1347 GMC reset itself?

In some cases, if the underlying issue causing the code is resolved, the code may reset itself after a certain number of drive cycles. However, it is recommended to diagnose and repair the problem to ensure the safety of the airbag system.

8. Can I reset OBDII code B1347 GMC with a simple disconnect-reconnect of the battery?

While disconnecting and reconnecting the battery may clear some codes, it is not a guaranteed method to reset this specific airbag-related code. It is best to address the root cause of the issue and clear the code using a professional OBDII scanner.

9. How much does it cost to repair OBDII code B1347 GMC?

The cost of repairing this code can vary depending on the specific cause of the issue, the parts needed for replacement, and labor costs. It is recommended to consult a professional mechanic for an accurate estimate.

10. Is it possible to prevent OBDII code B1347 GMC from occurring?

Regular maintenance and inspection of the airbag system components, prompt repair of any detected issues, and safe driving practices can help prevent this code from occurring.