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Engine-Codes – GMC – C1117 2014 GMC Sierra

C1117 2014 GMC Sierra Code - Manual Trailer Brake Apply Request Signal 2 Malfunction

Quick Answer

The C1117 code for a 2014 GMC Sierra indicates a Manual Trailer Brake Apply Request Signal 2 Malfunction. Common causes include Faulty manual trailer brake controller, Wiring issues or shorts in the trailer brake system, Corrosion or damage to electrical connections related to trailer brakes. 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
C1117 2014 GMC Sierra indicates Manual Trailer Brake Apply Request Signal 2 Malfunction.
Common causes
Common causes include Faulty manual trailer brake controller, Wiring issues or shorts in the trailer brake system, Corrosion or damage to electrical connections related to trailer brakes.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code C1117 2014 GMC Sierra Description

The C1117 code for a 2014 GMC Sierra indicates a Manual Trailer Brake Apply Request Signal 2 Malfunction. This code typically means that there is a problem with the signal being sent from the manual trailer brake controller to the vehicle's braking system. The manual trailer brake controller allows the driver to manually apply the brakes on a trailer being towed behind the vehicle. This code can affect the vehicle's performance by potentially causing issues with the braking system's response to manual trailer brake requests. If not addressed, it could lead to unsafe towing conditions and potential brake system failures.

OBDII Code C1117 2014 GMC Sierra - Manual Trailer Brake Apply Request Signal 2 Malfunction
C1117 2014 GMC Sierra Code - Manual Trailer Brake Apply Request Signal 2 Malfunction

Common Causes of C1117 2014 GMC Sierra

  1. Faulty manual trailer brake controller
  2. Wiring issues or shorts in the trailer brake system
  3. Corrosion or damage to electrical connections related to trailer brakes
  4. Malfunctioning brake control module
  5. Issues with the vehicle's brake system communication

Symptoms of C1117 2014 GMC Sierra

  1. Inability to manually apply trailer brakes
  2. Unresponsive trailer brakes when towing
  3. Warning light on the dashboard related to trailer brake system
  4. Erratic trailer braking behavior
  5. Decreased braking performance when towing a trailer

How to Fix C1117 2014 GMC Sierra

  1. Inspect and test the manual trailer brake controller for proper function
  2. Check wiring and connections for any damage or corrosion, repairing or replacing as necessary
  3. Test the brake control module for faults and replace if needed
  4. Verify communication between the vehicle's brake system and the manual trailer brake controller
  5. Clear the diagnostic trouble codes and test the system to ensure proper operation

Cost to Fix C1117 2014 GMC Sierra

The typical repair costs for addressing a Manual Trailer Brake Apply Request Signal 2 Malfunction code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, you can expect to pay anywhere from $150 to $500 for parts and labor. This estimate includes the cost of any necessary replacement parts, as well as the time required for diagnosis and repair by a professional technician. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to check local rates for a more accurate estimate.

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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 C1117 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code C1117 in a 2014 GMC Sierra?

- Common symptoms include the trailer brake system not working properly, the trailer brakes not engaging when manually applied, and a warning light on the dashboard.

2. What does the OBDII code C1117 for a 2014 GMC Sierra mean?

- The code C1117 indicates a Manual Trailer Brake Apply Request Signal 2 Malfunction in the vehicle's trailer brake system.

3. What are the possible causes of the C1117 code in a 2014 GMC Sierra?

- Possible causes include faulty wiring connections in the trailer brake system, a malfunctioning trailer brake controller, or issues with the brake switch.

4. How can I diagnose the C1117 code in my 2014 GMC Sierra?

- To diagnose the code, you can start by checking the wiring connections in the trailer brake system, testing the trailer brake controller, and inspecting the brake switch for proper operation.

5. Can I still safely tow a trailer with the C1117 code present in my 2014 GMC Sierra?

- It is not recommended to tow a trailer with the C1117 code present, as it indicates a malfunction in the trailer brake system that can affect braking performance.

6. How can I reset the C1117 code in my 2014 GMC Sierra?

- You can reset the code by using an OBDII scanner to clear the code after addressing the underlying issue in the trailer brake system.

7. Is it necessary to take my 2014 GMC Sierra to a mechanic for the C1117 code?

- While you can attempt to diagnose and repair the issue causing the C1117 code yourself, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair.

8. How much does it typically cost to repair the C1117 code in a 2014 GMC Sierra?

- The cost of repairing the C1117 code can vary depending on the underlying issue, but it may involve replacing faulty wiring, the trailer brake controller, or the brake switch, which can range from $100 to $500 or more.

9. Can the C1117 code in a 2014 GMC Sierra cause other problems if left unaddressed?

- If left unaddressed, the C1117 code can potentially lead to unsafe towing conditions, compromised trailer brake performance, and increased risk of accidents, so it is important to address the issue promptly.

10. How can I prevent the C1117 code from reoccurring in my 2014 GMC Sierra?

- To prevent the C1117 code from reoccurring, ensure regular maintenance of the trailer brake system, check wiring connections periodically, and address any issues promptly to maintain proper functionality.

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