AutoCodes – GMC – C111A 2014 GMC Sierra

C111A 2014 GMC Sierra Code - Trailer Brake Power Control Module

Quick Answer

The internal fault detection is handled inside the Trailer Brake Power Control Module. Common causes include Faulty Trailer Brake Power Control Module. 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: C111A 2014 GMC Sierra indicates Trailer Brake Power Control Module.
Common causes: Common causes include Faulty Trailer Brake Power Control Module.
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 326

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 Jul 19, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C111A 2014 GMC Sierra Description

The internal fault detection is handled inside the Trailer Brake Power Control Module. No external circuits are involved. The Trailer Brake Power Control Module runs the program to detect an internal fault when power-up is commanded. The only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating range. The Diagnostic Trouble Code (DTC) will be set when the Trailer Brake Power Control Module has detected an internal malfunction.

OBDII Code C111A 2014 GMC Sierra - Trailer Brake Power Control Module - AutoCodes.com — C111A 2014 GMC Sierra Code - Trailer Brake Power Control Module

What does this mean?

What are the Possible Causes of the DTC C111A 2014 GMC Sierra?

Faulty Trailer Brake Power Control Module

How to Fix the DTC C111A 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 C111A 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 C111A 2014 GMC Sierra code?

Need more information on how to fix the C111A 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 C111A 2014 GMC Sierra Code

1. What does OBDII code C111A for a 2014 GMC Sierra Trailer Brake Power Control Module indicate?

This code typically points to a fault in the trailer brake power control module, signaling an issue with the trailer brake system.

2. What are common symptoms of OBDII code C111A in a 2014 GMC Sierra?

Common symptoms include trailer brake system malfunctions, such as non-responsive brakes, inconsistent braking, or warning lights on the dashboard.

3. What are possible causes of OBDII code C111A in a 2014 GMC Sierra?

Potential causes include a faulty trailer brake power control module, damaged wiring connections, corroded terminals, or issues with the trailer brake system itself.

4. How can I diagnose the OBDII code C111A in my 2014 GMC Sierra?

To diagnose this code, you can use an OBDII scanner to retrieve the specific fault code, inspect the trailer brake power control module and related wiring for any visible damage, and test the trailer brake system components.

5. Can I still drive my 2014 GMC Sierra with OBDII code C111A?

It is not recommended to drive the vehicle with this code present, as it indicates a potential issue with the trailer brake system that could compromise braking performance and safety.

6. How can I repair OBDII code C111A in my 2014 GMC Sierra?

Repair options may include replacing the trailer brake power control module, repairing or replacing damaged wiring, cleaning corroded terminals, or addressing any underlying issues with the trailer brake system.

7. Is it necessary to reset the OBDII code C111A after making repairs on a 2014 GMC Sierra?

Yes, it is important to clear the code using an OBDII scanner after resolving the underlying issue to reset the system and ensure the code does not reappear.

8. Can a DIY enthusiast fix OBDII code C111A in a 2014 GMC Sierra?

Depending on their experience and tools available, a DIY enthusiast may be able to address this code by following repair procedures outlined in the vehicle's service manual or seeking assistance from online resources.

9. Is it common for the trailer brake power control module to fail in a 2014 GMC Sierra?

While not extremely common, failures in the trailer brake power control module can occur due to various factors such as age, wear and tear, electrical issues, or improper trailer brake system usage.

10. How can I prevent OBDII code C111A from appearing in my 2014 GMC Sierra in the future?

Regular maintenance, inspecting the trailer brake system for any signs of wear or damage, ensuring proper connections, and addressing any issues promptly can help prevent the recurrence of this OBDII code.