AutoCodes – Chevrolet – B3927 2017 Chevrolet Silverado

B3927 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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 291

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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado - Incorrect Environmental Identifier Received from Electronic Brake Control Module - AutoCodes.com — B3927 2017 Chevrolet Silverado Code - Incorrect Environmental Identifier Received from Electronic Brake Control Module

What does this mean?

What are the Possible Causes of the DTC B3927 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado code?

Need more information on how to fix the B3927 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2017 Chevrolet Silverado Code

1. What does OBDII code B3927 mean on a 2017 Chevrolet Silverado?

Code B3927 indicates that the Environmental Identifier received from the Electronic Brake Control Module (EBCM) does not match the expected data.

2. What are the symptoms of code B3927 in a 2017 Chevrolet Silverado?

Common symptoms include the illumination of the check engine light or ABS light, and possible issues with the vehicle's braking system or traction control system.

3. What causes code B3927 on a 2017 Chevrolet Silverado?

This code is typically caused by a configuration mismatch, communication error, or corrupted data exchange between the Electronic Brake Control Module (EBCM) and other control modules.

4. Can code B3927 affect vehicle performance?

Yes, it may affect braking system performance, including ABS and traction control functionality, depending on the severity of the issue.

5. How is code B3927 diagnosed in a 2017 Chevrolet Silverado?

A technician will use a scan tool to verify the code, check for other related codes, and review the communication data between the EBCM and other modules.

6. Is code B3927 a serious issue?

While it may not immediately affect drivability, issues with the braking system or ABS should be addressed promptly to ensure safety.

7. Can a software update fix code B3927?

In some cases, reprogramming or updating the software in the EBCM or related modules can resolve this code.

8. What repairs are necessary to fix code B3927?

Repairs may include reprogramming the EBCM, repairing wiring or communication lines, or replacing the EBCM if it is faulty.

9. How much does it cost to repair code B3927 on a 2017 Chevrolet Silverado?

The cost varies depending on the specific repair but typically ranges from $100 to $500, depending on labor rates and whether module replacement is necessary.

10. Can I clear code B3927 without fixing the issue?

Clearing the code without addressing the root cause may result in the code returning and could lead to further problems with the ABS or braking system.