AutoCodes – GMC – B3980 2017 GMC Sierra

B3980 2017 GMC Sierra Code - Incorrect Environmental Identifier Received from Instrument Cluster

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 Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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: B3980 2017 GMC Sierra indicates Incorrect Environmental Identifier Received from Instrument Cluster.
Common causes: Common causes include Faulty Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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 210

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 19, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3980 2017 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 (EBCM), 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.

OBDII Code B3980 2017 GMC Sierra - Incorrect Environmental Identifier Received from Instrument Cluster - AutoCodes.com — B3980 2017 GMC Sierra Code - Incorrect Environmental Identifier Received from Instrument Cluster

What does this mean?

What are the Possible Causes of the DTC B3980 2017 GMC Sierra?

Faulty Instrument Cluster
Instrument Cluster harness is open or shorted
Instrument Cluster circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3980 2017 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 B3980 2017 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 B3980 2017 GMC Sierra code?

Need more information on how to fix the B3980 2017 GMC Sierra 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 B3980 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code B3980 in a 2017 GMC Sierra?

The common symptoms of OBDII code B3980 include inaccurate environmental readings on the instrument cluster, such as incorrect temperature or compass direction display.

2. What causes the OBDII code B3980 to trigger in a 2017 GMC Sierra?

The code B3980 is typically triggered when the instrument cluster receives an incorrect environmental identifier signal, which can be caused by a faulty sensor, wiring issue, or a malfunction in the instrument cluster itself.

3. How can I diagnose the OBDII code B3980 in my 2017 GMC Sierra?

Diagnosing OBDII code B3980 involves checking the wiring connections to the instrument cluster, inspecting the environmental sensors for any damage or malfunction, and using a diagnostic tool to read the specific error codes stored in the vehicle's computer.

4. Can I still drive my 2017 GMC Sierra with the OBDII code B3980 present?

While the vehicle may still be operable with the code B3980 present, it is recommended to address the issue promptly to prevent potential inaccuracies in environmental readings and ensure proper functionality of the instrument cluster.

5. How can I repair the OBDII code B3980 in my 2017 GMC Sierra?

Repairing OBDII code B3980 may involve replacing a faulty sensor, repairing damaged wiring, or recalibrating the instrument cluster. It is recommended to consult a professional mechanic for an accurate diagnosis and repair.

6. Will resetting the OBDII code B3980 in my 2017 GMC Sierra fix the issue?

Resetting the code may temporarily clear the error from the system, but if the underlying issue causing the code to trigger is not addressed, the code is likely to reappear. It is best to diagnose and repair the root cause of the problem.

7. Are there any DIY tips for troubleshooting the OBDII code B3980 in a 2017 GMC Sierra?

Some DIY tips for troubleshooting the code B3980 include checking the fuse related to the instrument cluster, inspecting the sensor connections for corrosion, and ensuring proper grounding of the instrument cluster.

8. Can extreme weather conditions affect the triggering of OBDII code B3980 in a 2017 GMC Sierra?

Extreme weather conditions, such as temperature fluctuations or exposure to moisture, can potentially affect the operation of the environmental sensors and instrument cluster, leading to the triggering of code B3980. It is important to keep the vehicle protected from such conditions.

9. How long does it typically take to repair the OBDII code B3980 in a 2017 GMC Sierra?

The repair time for OBDII code B3980 can vary depending on the exact cause of the issue and the availability of parts. Simple repairs like sensor replacement may take a few hours, while more complex issues may require more time.

10. Is it necessary to have the OBDII code B3980 cleared after repairing the issue in a 2017 GMC Sierra?

Once the underlying cause of the code B3980 has been repaired, it is recommended to clear the code from the vehicle's system using a diagnostic tool to ensure that the issue has been resolved and to prevent any confusion in future diagnostics.