Engine-CodesGMC – C1114 2017 GMC Sierra

C1114 2017 GMC Sierra Code - Trailer Brake Control Solenoids Control Circuit Malfunction

Quick Answer

The C1114 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a malfunction in the control circuit of the trailer brake control solenoids. Common causes include Damaged wiring or connectors in the trailer brake control circuit, Faulty trailer brake control module, Malfunctioning trailer brake actuator. 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
C1114 2017 GMC Sierra indicates Trailer Brake Control Solenoids Control Circuit Malfunction.
Common causes
Common causes include Damaged wiring or connectors in the trailer brake control circuit, Faulty trailer brake control module, Malfunctioning trailer brake actuator.
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.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code C1114 2017 GMC Sierra Description

The C1114 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a malfunction in the control circuit of the trailer brake control solenoids. In vehicles equipped with trailer brake systems, the solenoids are responsible for controlling the application of the brakes on the trailer. When this circuit malfunctions, it can lead to issues with the trailer brake system, affecting the vehicle's ability to safely tow a trailer.

OBDII Code C1114 2017 GMC Sierra - Trailer Brake Control Solenoids Control Circuit Malfunction
C1114 2017 GMC Sierra Code - Trailer Brake Control Solenoids Control Circuit Malfunction

Common Causes of C1114 2017 GMC Sierra

  1. Damaged wiring or connectors in the trailer brake control circuit
  2. Faulty trailer brake control module
  3. Malfunctioning trailer brake actuator
  4. Issues with the vehicle's electrical system
  5. Corrosion or moisture in the trailer brake components

Symptoms of C1114 2017 GMC Sierra

  1. Illumination of the trailer brake warning light on the dashboard
  2. Inconsistent or weak trailer brake response
  3. Trailer brakes locking up or not engaging when braking
  4. Loss of trailer brake functionality
  5. ABS system engaging unexpectedly when towing a trailer

How to Fix C1114 2017 GMC Sierra

  1. Begin by conducting a thorough inspection of the trailer brake control circuit, including the wiring, connectors, and control module.
  2. Test the trailer brake actuator to determine if it is functioning properly.
  3. Check the vehicle's electrical system for any faults or issues that may be affecting the trailer brake control circuit.
  4. Replace any damaged wiring, connectors, or components in the control circuit as needed.
  5. Clear the DTC and test the trailer brake system to ensure proper functionality.

Cost to Fix C1114 2017 GMC Sierra

The typical repair costs for addressing a C1114 code on a 2017 GMC Sierra can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that the actual cost may vary based on factors such as the location of the repair shop, the make and model of the vehicle, and the extent of the repairs needed. Additionally, diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. It's recommended to obtain quotes from multiple shops to get a more accurate estimate for the repair.

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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 C1114 2017 GMC Sierra Code

1. What does OBDII code C1114 mean on a 2017 GMC Sierra?

C1114 indicates a "Trailer Brake Control Solenoids Control Circuit Malfunction," meaning there's an issue in the circuit that controls the trailer brake solenoids.

2. What are the common symptoms of C1114 on a 2017 GMC Sierra?

Common symptoms include a trailer brake warning light, reduced or no trailer brake functionality, and possibly a "Check Trailer Wiring" message on the dashboard.

3. What causes the C1114 code to appear?

Typical causes include damaged or corroded wiring, a faulty trailer brake control module, failed solenoids, or poor electrical connections in the trailer brake system.

4. Can I still tow a trailer with the C1114 code active?

You may be able to tow, but the trailer brakes might not function correctly, increasing stopping distances and reducing safety. It's recommended to address the issue before towing.

5. How do I troubleshoot the C1114 code?

Inspect the trailer wiring for damage, check for corrosion or loose connections at the trailer brake connector, and test the trailer brake control module and solenoids for proper functionality.

6. How much does it cost to fix the C1114 code?

The repair cost varies depending on the issue. Wiring repairs might cost $50–$200, while replacing the trailer brake control module could range from $300 to $600, including labor.

7. Can a faulty trailer affect the C1114 code on my GMC Sierra?

Yes, a trailer with damaged wiring or faulty brake components can trigger this code. Always inspect the trailer's electrical system when diagnosing this issue.

8. Is it safe to drive with the C1114 code active?

While the truck can still be driven, the trailer brake functionality may be compromised. Avoid towing until the issue is resolved to ensure safety.

9. Do I need a professional to fix a C1114 code?

If you're experienced with electrical diagnostics and repairs, you may be able to fix it yourself. Otherwise, it’s best to consult a professional mechanic to avoid further damage.

10. Can clearing the code fix the C1114 issue?

Clearing the code may temporarily turn off the warning, but the underlying issue causing the code must be addressed to prevent it from returning.

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