AutoCodes – GMC – B12A6 GMC

B12A6 GMC 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 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: B12A6 GMC 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: 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 281

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 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 GMC 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 GMC - Info Display Module Internal Malfunction - AutoCodes.com — B12A6 GMC Code - Info Display Module Internal Malfunction

What does this mean?

What are the Possible Causes of the DTC B12A6 GMC?

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 GMC?

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 GMC 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 GMC code?

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Need Help with the Code?

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Information for Specific GMC Models

B12A6 2014 GMC Sierra — Info Display Module Internal Malfunction
B12A6 2015 GMC Sierra — Info Display Module Internal Malfunction
B12A6 2016 GMC Sierra — Info Display Module Internal Malfunction
B12A6 2017 GMC Sierra — Info Display Module Internal Malfunction
B12A6 2018 GMC Sierra — Info Display Module Internal Malfunction

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 GMC Code

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

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

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

Symptoms may include a blank or non-functional infotainment screen, distorted display output, or inability to display vehicle settings and information.

3. What causes the B12A6 code to appear on a GMC?

Common causes include internal hardware failure of the display module, software corruption, loose electrical connections, or a blown fuse related to the module.

4. Can I drive my GMC with code B12A6 active?

Yes, you can drive the vehicle, as this code typically does not affect drivability. However, you may lose access to important vehicle information displayed on the screen.

5. How do I diagnose the B12A6 code on a GMC?

Start by checking for loose or damaged wiring to the display module, inspecting the fuse for the module, and performing a software update or reset of the infotainment system if applicable.

6. Is a software update a potential solution for code B12A6?

Yes, in some cases, updating the infotainment system software can resolve the issue if the malfunction is caused by software corruption.

7. How much does it cost to repair the B12A6 code on a GMC vehicle?

Repair costs vary depending on the issue but can range from $100 for a software update to $1,000 or more if the display module needs to be replaced.

8. Can I reset code B12A6 by disconnecting the battery?

Disconnecting the battery may temporarily clear the code, but if the underlying issue isnâ€™t resolved, the code will return.

9. Does the B12A6 code require a full replacement of the info display module?

Not always. Before replacing the module, check for software updates, wiring issues, or blown fuses, as these might resolve the problem without replacement.

10. Should I take my GMC to a dealership for the B12A6 code?

Yes, itâ€™s often a good idea to visit a dealership for diagnosis and repair, as they have specialized tools and software to address infotainment system issues.