AutoCodes – GMC – B3928 2016 GMC Sierra

B3928 2016 GMC Sierra Code - Incorrect Environmental Identifier Received from Telematics Communication Interface 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 Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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
B3928 2016 GMC Sierra indicates Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module.
Common causes
Common causes include Faulty Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 150
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 16, 2023
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Code B3928 2016 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 B3928 2016 GMC Sierra - Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module - AutoCodes.com
B3928 2016 GMC Sierra Code - Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module

What are the Possible Causes of the DTC B3928 2016 GMC Sierra?

  • Faulty Telematics Communication Interface Control Module
  • Telematics Communication Interface Control Module harness is open or shorted
  • Telematics Communication Interface Control Module circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B3928 2016 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 B3928 2016 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 B3928 2016 GMC Sierra code?

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Need Help with the 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 B3928 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code B3928 on a 2016 GMC Sierra?

The common symptoms include the malfunction indicator light (MIL) illuminating, issues with the telematics system, and potential communication problems with the control module.

2. What does the OBDII code B3928 indicate on a 2016 GMC Sierra?

OBDII code B3928 indicates that the Telematics Communication Interface Control Module has received an incorrect environmental identifier.

3. What are the possible causes of OBDII code B3928 on a 2016 GMC Sierra?

Possible causes include damaged wiring or connectors, a faulty telematics communication interface control module, software glitches, or a communication error within the vehicle's network.

4. How can I diagnose OBDII code B3928 on a 2016 GMC Sierra?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific fault codes, checking the wiring and connectors for any damage, and testing the telematics communication interface control module for proper functionality.

5. Can OBDII code B3928 on a 2016 GMC Sierra be fixed at home?

Depending on the underlying cause, some DIY fixes may be possible, such as checking and repairing damaged wiring or connectors. However, for more complex issues like a faulty control module, professional diagnosis and repair may be required.

6. Is it safe to continue driving with OBDII code B3928 present on a 2016 GMC Sierra?

While the vehicle may still be operable with this code, it's important to address the underlying issue promptly to prevent potential communication failures and ensure the proper functioning of the telematics system.

7. How much does it typically cost to repair OBDII code B3928 on a 2016 GMC Sierra?

The cost of repairing this code can vary depending on the specific cause and the required repairs. It's advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.

8. Can resetting the OBDII system clear the B3928 code on a 2016 GMC Sierra?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It's crucial to diagnose and fix the root cause of the problem.

9. Does OBDII code B3928 affect the vehicle's performance on a 2016 GMC Sierra?

While the code itself may not directly impact the vehicle's performance, unresolved communication issues within the telematics system can potentially lead to functionality problems or other issues down the line.

10. How can I prevent OBDII code B3928 from recurring on a 2016 GMC Sierra?

Regular maintenance, timely repairs of damaged wiring or connectors, and addressing any telematics system issues promptly can help prevent the recurrence of OBDII code B3928 on your GMC Sierra.

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