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B3928 2016 GMC Sierra Code - Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module

Quick Answer

The B3928 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the Telematics Communication Interface Control Module has detected an incorrect environmental identifier. Common causes include Faulty wiring connections to the Telematics Communication Interface Control Module, Software glitches or bugs affecting the module's operation, Water damage to the module due to leaks in the vehicle. 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 wiring connections to the Telematics Communication Interface Control Module, Software glitches or bugs affecting the module's operation, Water damage to the module due to leaks in the vehicle.
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 14, 2024
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Code B3928 2016 GMC Sierra Description

The B3928 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the Telematics Communication Interface Control Module has detected an incorrect environmental identifier. This module is responsible for managing the vehicle's telematics system, which includes features such as GPS navigation, hands-free calling, and remote vehicle diagnostics. When the module receives an environmental identifier that does not match the expected parameters, it triggers this code.

OBDII Code B3928 2016 GMC Sierra - Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
B3928 2016 GMC Sierra Code - Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module

Common Causes of B3928 2016 GMC Sierra

  1. Faulty wiring connections to the Telematics Communication Interface Control Module
  2. Software glitches or bugs affecting the module's operation
  3. Water damage to the module due to leaks in the vehicle
  4. Physical damage to the module from impact or vibration
  5. Electrical issues in the vehicle's system affecting communication with the module

Symptoms of B3928 2016 GMC Sierra

  1. Inaccurate GPS navigation directions
  2. Loss of hands-free calling functionality
  3. Inability to access remote vehicle diagnostics
  4. Warning lights related to the telematics system on the dashboard
  5. Communication errors with emergency services during an accident

How to Fix B3928 2016 GMC Sierra

  1. Begin by conducting a thorough inspection of the wiring connections to the Telematics Communication Interface Control Module to check for any loose or damaged wires.
  2. Use diagnostic tools to scan the module for software glitches and update the software if necessary.
  3. Inspect the module for any signs of water damage and address any leaks in the vehicle that could be causing this issue.
  4. If the module is physically damaged, replace it with a new one and ensure proper installation.
  5. Test the telematics system after repairs to verify that the issue has been resolved.

Cost to Fix B3928 2016 GMC Sierra

The typical repair costs for addressing the B3928 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty Telematics Communication Interface Control Module can range from $200 to $500 for the part alone. Labor costs can add an additional $100 to $200, with total repair costs potentially reaching $300 to $700. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to obtain quotes from multiple sources to get 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 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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