AutoCodes – GMC – C111A 2015 GMC Sierra

C111A 2015 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 2015 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 371

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 2015 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 2015 GMC Sierra - Trailer Brake Power Control Module - AutoCodes.com — C111A 2015 GMC Sierra Code - Trailer Brake Power Control Module

What does this mean?

What are the Possible Causes of the DTC C111A 2015 GMC Sierra?

Faulty Trailer Brake Power Control Module

How to Fix the DTC C111A 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 C111A 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 C111A 2015 GMC Sierra code?

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Need Help with the Code?

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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 2015 GMC Sierra Code

1. What does OBDII code C111A indicate in a 2015 GMC Sierra related to the Trailer Brake Power Control Module?

- OBDII code C111A in a 2015 GMC Sierra typically points to a fault in the Trailer Brake Power Control Module.

2. What are common symptoms of OBDII code C111A in a 2015 GMC Sierra?

- Common symptoms of OBDII code C111A may include trailer brake system malfunctions, warning lights on the dashboard, and issues with trailer brake control.

3. What are possible causes of OBDII code C111A in a 2015 GMC Sierra?

- Possible causes of OBDII code C111A in a 2015 GMC Sierra include damaged wiring, faulty trailer brake power control module, or issues with the trailer brake system components.

4. How can I diagnose the cause of OBDII code C111A in my 2015 GMC Sierra?

- To diagnose OBDII code C111A, it is recommended to perform a thorough inspection of the trailer brake system wiring, connections, and components. Using a diagnostic scan tool can help pinpoint the exact cause.

5. Can OBDII code C111A in a 2015 GMC Sierra be repaired at home?

- Depending on the exact cause, repairing OBDII code C111A in a 2015 GMC Sierra may be possible at home if you have the necessary tools and expertise. However, complex electrical issues may require professional assistance.

6. Is it safe to drive my 2015 GMC Sierra with OBDII code C111A active?

- It is not recommended to drive your 2015 GMC Sierra with OBDII code C111A active, as it indicates a fault in the trailer brake power control module, which can affect the trailer brake system's functionality.

7. How much does it typically cost to repair OBDII code C111A in a 2015 GMC Sierra?

- The cost to repair OBDII code C111A in a 2015 GMC Sierra can vary depending on the exact cause of the issue. It is advisable to consult a professional mechanic for an accurate estimate.

8. Can resetting the OBDII system clear OBDII code C111A in a 2015 GMC Sierra?

- Resetting the OBDII system may temporarily clear OBDII code C111A in a 2015 GMC Sierra, but if the underlying issue is not addressed, the code is likely to return.

9. Are there any recalls related to OBDII code C111A in 2015 GMC Sierra models?

- It is advisable to check with the manufacturer or authorized dealerships to inquire about any recalls related to OBDII code C111A in 2015 GMC Sierra models.

10. How can I prevent OBDII code C111A from occurring in my 2015 GMC Sierra in the future?

- To prevent OBDII code C111A from occurring in the future, it is essential to properly maintain the trailer brake system, regularly inspect wiring and connections, and address any issues promptly.