AutoCodes – GMC – B3927 2015 GMC Sierra

B3927 2015 GMC Sierra Code - Incorrect Environmental Identifier Received from Electronic Brake Control Module

Quick Answer

When certain modules are programmed and configured during installation, the module learns a specific environment identifier which is unique to the vehicle. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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: B3927 2015 GMC Sierra indicates Incorrect Environmental Identifier Received from Electronic Brake Control Module.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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 167

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 16, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3927 2015 GMC Sierra Description

When certain modules are programmed and configured during installation, the module learns a specific environment identifier which is unique to the vehicle. The environment identifier is used to prevent the swapping of control modules between vehicles. The Body Control Module (BCM) is the keeper of the environment identifier. The instrument cluster, electronic brake control module, Heating, Ventilation, and Air Conditioning (HVAC) Control Module, inflatable restraint sensing and diagnostic module, and telematics communication interface control module each learn the environment identifier during their configuration process. During vehicle operation, the BCM sends the immobilizer identifier as a challenge and each module responds to the challenge by sending the environment identifier back to the BCM. If the BCM sends an incorrect immobilizer identifier or a specific number of incorrect environment identifiers are received, vehicle starting is disabled.
The Diagnostic Trouble Code (DTC) sets when the control module's environment identifier does not match the environment identifier stored by the BCM.

OBDII Code B3927 2015 GMC Sierra - Incorrect Environmental Identifier Received from Electronic Brake Control Module - AutoCodes.com — B3927 2015 GMC Sierra Code - Incorrect Environmental Identifier Received from Electronic Brake Control Module

What does this mean?

What are the Possible Causes of the DTC B3927 2015 GMC Sierra?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module harness is open or shorted
Electronic Brake Control Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3927 2015 GMC Sierra?

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 B3927 2015 GMC Sierra 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 B3927 2015 GMC Sierra code?

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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 B3927 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B3927 in a 2015 GMC Sierra?

The common symptoms include the illumination of the check engine light, decreased braking performance, and issues with the electronic brake control system.

2. What does the OBDII code B3927 mean for a 2015 GMC Sierra?

OBDII code B3927 indicates that the vehicle's onboard diagnostic system has detected an incorrect environmental identifier received from the electronic brake control module.

3. What are the possible causes of OBDII code B3927 in a 2015 GMC Sierra?

Possible causes include a faulty electronic brake control module, damaged wiring or connectors, software issues, or communication errors within the braking system.

4. How can I diagnose OBDII code B3927 in my 2015 GMC Sierra?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific fault codes, inspecting the electronic brake control module and related components, and testing the wiring and connectors for any issues.

5. Can I continue driving my 2015 GMC Sierra with OBDII code B3927?

It is not recommended to continue driving the vehicle with this code present, as it can affect the performance of the electronic brake control system and potentially compromise safety.

6. How can I repair OBDII code B3927 in my 2015 GMC Sierra?

Repairing this code may involve replacing the electronic brake control module, repairing any damaged wiring or connectors, updating software as needed, and clearing the fault codes from the system.

7. Is it possible to reset OBDII code B3927 in a 2015 GMC Sierra without fixing the underlying issue?

While you can clear the fault codes temporarily, the check engine light is likely to reappear if the root cause of the issue is not addressed. It is best to fix the problem to prevent further issues.

8. Are there any recalls or technical service bulletins related to OBDII code B3927 in a 2015 GMC Sierra?

It is recommended to check with a GMC dealership or online resources for any recalls or technical service bulletins related to this specific OBDII code to see if there are any known issues or remedies available.

9. Can a DIY enthusiast fix OBDII code B3927 in a 2015 GMC Sierra?

Depending on your skill level and access to tools, you may be able to address some aspects of the issue, such as checking wiring connections or clearing fault codes. However, more complex repairs may require professional assistance.

10. How can I prevent OBDII code B3927 from occurring in my 2015 GMC Sierra in the future?

Regular maintenance, including checking and maintaining the electronic brake control system, keeping wiring connections secure, and promptly addressing any warning lights or unusual behavior, can help prevent this code from appearing.