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Engine-Codes – GMC – B3924 2014 GMC Sierra

B3924 2014 GMC Sierra Code - Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module

Quick Answer

The B3924 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the Inflatable Restraint Sensing and Diagnostic Module (SDM) has received an incorrect environmental identifier. Common causes include Faulty wiring connections, Damaged sensors, Malfunctioning SDM. 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
B3924 2014 GMC Sierra indicates Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module.
Common causes
Common causes include Faulty wiring connections, Damaged sensors, Malfunctioning SDM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B3924 2014 GMC Sierra Description

The B3924 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the Inflatable Restraint Sensing and Diagnostic Module (SDM) has received an incorrect environmental identifier. This module is a crucial component of the vehicle's airbag system, responsible for detecting crashes and deploying airbags to protect occupants. When the SDM receives an incorrect environmental identifier, it means that there is a communication error or discrepancy in the data it is receiving, which can compromise the proper functioning of the airbag system.

OBDII Code B3924 2014 GMC Sierra - Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module
B3924 2014 GMC Sierra Code - Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module

Common Causes of B3924 2014 GMC Sierra

  1. Faulty wiring connections.
  2. Damaged sensors.
  3. Malfunctioning SDM.
  4. Software glitches.
  5. Corrosion in the airbag system components.

Symptoms of B3924 2014 GMC Sierra

  1. Airbag warning light illuminated on the dashboard.
  2. Inconsistent or erratic airbag deployment.
  3. Loss of communication with the SDM.
  4. Stored DTCs related to the airbag system.

How to Fix B3924 2014 GMC Sierra

  1. Begin by conducting a thorough inspection of the wiring connections and sensors in the airbag system to identify any visible damage or corrosion.
  2. Use a diagnostic scan tool to retrieve and clear the DTCs stored in the SDM.
  3. If the issue persists, consider replacing the SDM with a new unit to ensure proper communication and functionality.
  4. Test the airbag system to verify that the error code has been resolved and that the airbags deploy correctly.
  5. Clear the DTC from the vehicle's memory to reset the system and ensure that the warning light is no longer illuminated.

Cost to Fix B3924 2014 GMC Sierra

The typical repair costs for addressing a B3924 DTC in a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing the SDM can cost anywhere from $300 to $800, including parts and labor. Additional costs may be incurred if wiring repairs or sensor replacements are necessary. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check with local providers for a more accurate estimate.

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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 B3924 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code B3924 in a 2014 GMC Sierra?

The common symptoms of code B3924 include the airbag warning light illuminating on the dashboard and potential issues with the vehicle's restraint system.

2. What does the OBDII code B3924 mean for a 2014 GMC Sierra?

Code B3924 indicates that the Inflatable Restraint Sensing and Diagnostic Module has received an incorrect environmental identifier, suggesting a communication problem within the airbag system.

3. What are the possible causes of OBDII code B3924 in a 2014 GMC Sierra?

Potential causes of code B3924 include faulty wiring connections, a malfunctioning Inflatable Restraint Sensing and Diagnostic Module, damaged sensors, or a communication error within the airbag system.

4. How serious is OBDII code B3924 in a 2014 GMC Sierra?

Code B3924 should be taken seriously, as it relates to the proper functioning of the vehicle's airbag system. It is important to address this issue promptly to ensure the safety features of the vehicle are functioning correctly.

5. How can I diagnose OBDII code B3924 in my 2014 GMC Sierra?

Diagnosing code B3924 typically involves using a diagnostic scanner to retrieve the specific error code, inspecting the airbag system components for damage or loose connections, and testing the sensors and modules for proper functionality.

6. Can I drive my 2014 GMC Sierra with OBDII code B3924 present?

It is not recommended to drive the vehicle with code B3924 present, as it indicates a potential issue with the airbag system. Driving with a malfunctioning airbag system can compromise the safety of the vehicle occupants in the event of a collision.

7. How can I repair OBDII code B3924 in my 2014 GMC Sierra?

Repairing code B3924 may involve fixing any wiring issues, replacing damaged sensors or modules, or reprogramming the Inflatable Restraint Sensing and Diagnostic Module. It is advisable to consult a professional mechanic for an accurate diagnosis and repair.

8. Is it possible to reset OBDII code B3924 in a 2014 GMC Sierra?

While you can clear the error code using a diagnostic scanner, it is essential to address the underlying cause of code B3924 to prevent it from reoccurring. Simply resetting the code without fixing the root problem may lead to ongoing issues with the airbag system.

9. Are there any safety precautions I should take if OBDII code B3924 is present in my 2014 GMC Sierra?

If code B3924 is present, it is crucial to prioritize safety by avoiding aggressive driving, ensuring all occupants wear seat belts, and promptly addressing the airbag system issue to maintain the vehicle's safety features.

10. How much does it typically cost to repair OBDII code B3924 in a 2014 GMC Sierra?

The cost of repairing code B3924 can vary depending on the specific cause of the issue, the parts needed for replacement, and the labor rates of the repair shop. It is advisable to obtain quotes from different mechanics to compare prices for the necessary repairs.

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