AutoCodes – GMC – B3031 2017 GMC Sierra

B3031 2017 GMC Sierra Code - Security System Controller In Learn Mode

Quick Answer

When learning a coded key, the Body Control Module (BCM) is placed in learn mode. Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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: B3031 2017 GMC Sierra indicates Security System Controller In Learn Mode.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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 182

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 02, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3031 2017 GMC Sierra Description

When learning a coded key, the Body Control Module (BCM) is placed in learn mode. Diagnostic Trouble Code (DTC) B3031 will be set automatically as an indicator that the system is in learning mode and not as a fault indicator. On some model-year vehicles, the instructions for adding keys includes the direction to always use two learned keys. This DTC will be set if that direction is not followed. If only one learned key is available, then Replacing Keys must be performed. Once the coded key is learned, learn mode will be exited and the DTC cleared. If the BCM does not exit learn mode, DTC B3031 will remain current and indicate a fault. The instrument cluster security indicator will illuminate, and the driver information center will display a message.

OBDII Code B3031 2017 GMC Sierra - Security System Controller In Learn Mode - AutoCodes.com — B3031 2017 GMC Sierra Code - Security System Controller In Learn Mode

What does this mean?

What are the Possible Causes of the DTC B3031 2017 GMC Sierra?

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

How to Fix the DTC B3031 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 B3031 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 B3031 2017 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 B3031 2017 GMC Sierra Code

1. What does the OBDII code B3031 mean on a 2017 GMC Sierra?

The B3031 code indicates that the security system controller is in "Learn Mode," which typically occurs during the programming of a new key or security system component.

2. What are the symptoms of the B3031 code on a GMC Sierra?

Symptoms may include the vehicle not starting, security light illumination on the dashboard, or difficulty programming new keys.

3. What causes the B3031 code to be triggered?

This code is triggered when the security system controller enters "Learn Mode," usually during key programming or after replacing the theft deterrent module.

4. Is the B3031 code normal during key programming?

Yes, it is normal for the B3031 code to appear temporarily when programming new keys or components in the security system.

5. How do I clear the B3031 code on my 2017 GMC Sierra?

The code typically clears itself after the programming process is complete. If it does not, a scan tool may be needed to clear it manually.

6. Can the B3031 code cause my GMC Sierra not to start?

Yes, if the security system is not fully programmed or if there is an issue with the theft deterrent module, the vehicle may not start.

7. What should I do if the B3031 code persists after programming?

If the code remains after programming, check for issues with the ignition key, theft deterrent module, or wiring connections, and reattempt the programming process if necessary.

8. Can a dead battery cause the B3031 code on a GMC Sierra?

A dead or disconnected battery can sometimes lead to the theft deterrent system entering Learn Mode, triggering the B3031 code.

9. Do I need special tools to fix the B3031 code?

Yes, you may need a compatible scan tool to diagnose the system and perform key programming or theft deterrent module relearn procedures.

10. Should I take my GMC Sierra to a dealership for the B3031 code?

If youâ€™re unable to clear the code or complete the programming process, itâ€™s recommended to visit a dealership or qualified technician with experience in security system repairs.