AutoCodes – GMC – B12A4 2017 GMC Sierra

B12A4 2017 GMC Sierra Code - Infotainment Faceplate Control Module

Quick Answer

The radio communicates with the radio controls 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: B12A4 2017 GMC Sierra indicates Infotainment Faceplate Control Module.
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 195

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 B12A4 2017 GMC Sierra Description

The radio communicates with the radio controls via serial data. This Diagnostic Trouble Code (DTC) indicates a fault in the radio controls. No external circuits are involved. The radio may continue to respond normally to faceplate functions when this DTC is set.

OBDII Code B12A4 2017 GMC Sierra - Infotainment Faceplate Control Module - AutoCodes.com — B12A4 2017 GMC Sierra Code - Infotainment Faceplate Control Module

What does this mean?

What are the Possible Causes of the DTC B12A4 2017 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 B12A4 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 B12A4 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 B12A4 2017 GMC Sierra code?

Need more information on how to fix the B12A4 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B12A4 2017 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 B12A4 2017 GMC Sierra Code

What does the OBDII code B12A4 mean on a 2017 GMC Sierra?

The code B12A4 refers to an issue with the Infotainment Faceplate Control Module, indicating a communication or hardware fault in the infotainment system.

What are common symptoms of the B12A4 code in a 2017 GMC Sierra?

Common symptoms include unresponsive infotainment buttons, non-functional audio or climate controls on the faceplate, and possible error messages on the display.

What causes the B12A4 code to appear?

The code can be caused by a faulty Infotainment Faceplate Control Module, wiring issues, loose connections, or software malfunctions in the infotainment system.

Can I still drive my 2017 GMC Sierra if the B12A4 code is active?

Yes, you can still drive the vehicle, but you may experience issues with the infotainment system functionality, which can be inconvenient.

How is the B12A4 code diagnosed?

A technician will use a scan tool to confirm the code, inspect wiring and connections, and test the functionality of the Infotainment Faceplate Control Module.

Can I fix the B12A4 code myself?

If the issue is due to loose connections, you may be able to fix it by securing the wiring. However, for module replacement or software updates, professional assistance is recommended.

How much does it cost to fix the B12A4 code on a 2017 GMC Sierra?

Repair costs can vary depending on the issue, but replacing the Infotainment Faceplate Control Module typically costs between $200 and $600, including labor.

Does the B12A4 code require reprogramming the module?

In some cases, reprogramming or updating the software of the Infotainment Faceplate Control Module may be necessary to resolve the issue.

Can a dead battery cause the B12A4 code to set?

Yes, a dead or weak battery can lead to voltage fluctuations that may trigger the B12A4 code or affect the infotainment system.

What preventative maintenance can help avoid the B12A4 code?

Ensuring the battery is in good condition, avoiding liquid spills near the infotainment controls, and addressing electrical issues promptly can help prevent this code.