AutoCodes – Chevrolet – C1116 2015 Chevrolet Silverado

C1116 2015 Chevrolet Silverado Code - Manual Trailer Brake Apply Request Signal 1 Malfunction

Quick Answer

The trailer brake control system has a control panel with the trailer gain and manual apply switches. Common causes include Faulty Trailer Brake Control Switch, Trailer Brake Control Switch harness is open or shorted, Trailer Brake Control Switch 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
C1116 2015 Chevrolet Silverado indicates Manual Trailer Brake Apply Request Signal 1 Malfunction.
Common causes
Common causes include Faulty Trailer Brake Control Switch, Trailer Brake Control Switch harness is open or shorted, Trailer Brake Control Switch 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 234
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 18, 2023
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Code C1116 2015 Chevrolet Silverado Description

The trailer brake control system has a control panel with the trailer gain and manual apply switches. The switches are located on the instrument panel to the left of the steering column. The control panel and switches allow you to adjust the amount of output, referred to as trailer gain, available to the electric trailer brakes and allow you to manually apply the trailer brakes. The trailer brake control panel and switches are used along with the trailer brake display page on the driver information center to adjust and display power output to the trailer brakes.
OBDII Code C1116 2015 Chevrolet Silverado - Manual Trailer Brake Apply Request Signal 1 Malfunction - AutoCodes.com
C1116 2015 Chevrolet Silverado Code - Manual Trailer Brake Apply Request Signal 1 Malfunction

What are the Possible Causes of the DTC C1116 2015 Chevrolet Silverado?

  • Faulty Trailer Brake Control Switch
  • Trailer Brake Control Switch harness is open or shorted
  • Trailer Brake Control Switch circuit poor electrical connection
  • Faulty Chassis Control Module-Auxiliary

How to Fix the DTC C1116 2015 Chevrolet Silverado?

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 C1116 2015 Chevrolet Silverado 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 C1116 2015 Chevrolet Silverado code?

Need more information on how to fix the C1116 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1116 2015 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 C1116 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code C1116 in a 2015 Chevrolet Silverado?

The common symptoms include the trailer brakes not engaging properly when manually activated, warning lights related to the trailer brake system appearing on the dashboard, and potential issues with the trailer brake performance.

2. What can cause the Manual Trailer Brake Apply Request Signal 1 Malfunction in a 2015 Chevrolet Silverado?

Potential causes of this code may include a faulty trailer brake controller, damaged wiring or connectors in the trailer brake system, or issues with the trailer brake actuator.

3. How can I diagnose the C1116 code in my 2015 Chevrolet Silverado?

A thorough diagnostic process involves checking the trailer brake controller for proper functioning, inspecting the wiring and connectors for any damage, and testing the trailer brake actuator to ensure it is working correctly.

4. Can I continue to drive my 2015 Chevrolet Silverado with the C1116 code?

It is not recommended to drive the vehicle with this code present, as it may affect the performance of the trailer brake system, potentially compromising safety while towing.

5. How can I repair the Manual Trailer Brake Apply Request Signal 1 Malfunction in my 2015 Chevrolet Silverado?

Repair options may include replacing the trailer brake controller, repairing or replacing damaged wiring or connectors, and ensuring proper calibration of the trailer brake system after the repairs are completed.

6. Are there any DIY tips for troubleshooting the C1116 code in a 2015 Chevrolet Silverado?

DIY enthusiasts can start by checking the trailer brake controller fuse, inspecting the wiring harness for visible damage, and ensuring all connections in the trailer brake system are secure and free of corrosion.

7. Will resetting the OBDII code C1116 in my 2015 Chevrolet Silverado make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue causing the malfunction is not addressed, the code is likely to reappear after some time.

8. Is it necessary to visit a dealership for repairing the C1116 code in a 2015 Chevrolet Silverado?

While visiting a dealership or a certified mechanic is recommended for accurate diagnosis and repair, experienced DIYers with knowledge of automotive electrical systems may be able to address the issue themselves.

9. Can extreme weather conditions affect the occurrence of the C1116 code in a 2015 Chevrolet Silverado?

Extreme weather conditions, especially moisture and corrosion, can indeed impact the trailer brake system components and wiring, potentially leading to malfunctions like the Manual Trailer Brake Apply Request Signal 1 Malfunction.

10. How can I prevent the OBDII code C1116 from appearing in my 2015 Chevrolet Silverado in the future?

Regular maintenance of the trailer brake system, keeping all connections clean and secure, and addressing any issues promptly can help prevent the recurrence of the Manual Trailer Brake Apply Request Signal 1 Malfunction code.

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