AutoCodes – GMC – B12A6 2015 GMC Sierra

B12A6 2015 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 2015 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 203

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 2015 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 2015 GMC Sierra - Info Display Module Internal Malfunction - AutoCodes.com — B12A6 2015 GMC Sierra Code - Info Display Module Internal Malfunction

What does this mean?

What are the Possible Causes of the DTC B12A6 2015 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 2015 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 2015 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 2015 GMC Sierra code?

Need more information on how to fix the B12A6 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B12A6 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 2015 GMC Sierra Code

1. What does the OBDII code B12A6 mean on a 2015 GMC Sierra?

The code B12A6 indicates an internal malfunction in the Info Display Module, typically related to hardware or software issues within the module.

2. What are the common symptoms of the B12A6 code in a 2015 GMC Sierra?

Symptoms may include a blank or unresponsive display screen, incorrect or missing information on the screen, or intermittent operation of the Info Display Module.

3. What causes the B12A6 code in a 2015 GMC Sierra?

This code is often caused by internal hardware failures, software corruption, or electrical issues such as damaged wiring or poor connections to the Info Display Module.

4. Can a dead battery trigger the B12A6 code in a 2015 GMC Sierra?

Yes, a dead or weak battery can potentially cause software glitches in the Info Display Module, leading to this code being set.

5. How can I fix the B12A6 code on my 2015 GMC Sierra?

Repairs may involve inspecting the module for damage, checking wiring and connections, reprogramming the module, or replacing it if necessary.

6. Do I need to replace the Info Display Module to fix the B12A6 code?

Not always. Sometimes the issue can be resolved through software updates or repairing wiring issues, but module replacement may be required if internal damage is confirmed.

7. Can the B12A6 code affect other vehicle functions in a 2015 GMC Sierra?

While it primarily affects the Info Display Module, it may indirectly impact functionalities tied to the display, such as navigation or system alerts.

8. How do I diagnose the B12A6 code in a 2015 GMC Sierra?

Diagnosis involves scanning for codes, inspecting the module and wiring, testing for power and ground at the module, and checking for software updates.

9. Is it safe to drive with the B12A6 code in a 2015 GMC Sierra?

Yes, the vehicle can usually be driven safely, but you may lose access to important information displayed on the screen, such as navigation or warning messages.

10. How much does it cost to fix the B12A6 code on a 2015 GMC Sierra?

Repair costs vary widely depending on whether the issue is resolved with a software update, wiring repair, or module replacement, which can range from $100 to over $1,000.