AutoCodes – GMC – B12A6 2014 GMC Sierra

B12A6 2014 GMC Sierra Code - Info Display Module Internal Malfunction

Quick Answer

The radio communicates with the Info Display Module via serial data. Common causes include Faulty Info Display Module, Info Display Module harness is open or shorted, Info Display Module circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B12A6 2014 GMC Sierra indicates Info Display Module Internal Malfunction.
Common causes: Common causes include Faulty Info Display Module, Info Display Module harness is open or shorted, Info Display Module circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 279

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B12A6 2014 GMC Sierra Description

The radio communicates with the Info Display Module via serial data. This Diagnostic Trouble Code (DTC) indicates a fault in the Info Display Module. No external circuits are involved.

OBDII Code B12A6 2014 GMC Sierra - Info Display Module Internal Malfunction - AutoCodes.com — B12A6 2014 GMC Sierra Code - Info Display Module Internal Malfunction

What does this mean?

What are the Possible Causes of the DTC B12A6 2014 GMC Sierra?

Faulty Info Display Module
Info Display Module harness is open or shorted
Info Display Module circuit poor electrical connection

How to Fix the DTC B12A6 2014 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 B12A6 2014 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 B12A6 2014 GMC Sierra code?

Need more information on how to fix the B12A6 2014 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 B12A6 2014 GMC Sierra Code

1. What does OBDII code B12A6 mean on a 2014 GMC Sierra?

Code B12A6 indicates an "Info Display Module Internal Malfunction," meaning there is an issue with the internal circuitry or functionality of the information display module.

2. What are the symptoms of code B12A6 in a GMC Sierra?

Common symptoms include a blank or unresponsive infotainment screen, erratic display behavior, or inability to access certain vehicle settings or features.

3. What causes the B12A6 code to appear?

The code is typically caused by hardware failure in the info display module, software glitches, wiring issues, or communication problems with other control modules.

4. Can a software update fix code B12A6?

In some cases, a software update or reprogramming of the info display module may resolve the issue if the malfunction is due to a software glitch.

5. How do you diagnose code B12A6 on a 2014 GMC Sierra?

Diagnosis involves using a scan tool to confirm the code, inspecting the wiring and connectors for damage or loose connections, and testing the functionality of the info display module.

6. Is it safe to drive with a B12A6 code?

Yes, the vehicle is generally safe to drive, but features controlled by the info display module may not function properly, which could be inconvenient.

7. How much does it cost to repair a B12A6 code?

Repair costs vary but can range from $300 to $1,200 depending on whether the module needs reprogramming, repair, or replacement.

8. Can I reset the B12A6 code without repairing the issue?

Clearing the code with a scan tool may temporarily reset it, but the underlying issue will likely cause the code to return.

9. Does a faulty fuse cause the B12A6 code?

A blown fuse can disrupt power to the info display module, potentially contributing to the code. Checking fuses is a good first step in troubleshooting.

10. Do I need to replace the info display module to fix code B12A6?

Replacement is sometimes necessary if the module has an internal failure, but testing and reprogramming should be attempted first to confirm the root cause.