AutoCodes – Chevrolet – C1116 2018 Chevrolet Silverado

C1116 2018 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 2018 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 212

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 18, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1116 2018 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 2018 Chevrolet Silverado - Manual Trailer Brake Apply Request Signal 1 Malfunction - AutoCodes.com — C1116 2018 Chevrolet Silverado Code - Manual Trailer Brake Apply Request Signal 1 Malfunction

What does this mean?

What are the Possible Causes of the DTC C1116 2018 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 2018 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 2018 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 2018 Chevrolet Silverado code?

Need more information on how to fix the C1116 2018 Chevrolet Silverado 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 C1116 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code C1116 in a 2018 Chevrolet Silverado?

The common symptoms of OBDII code C1116 in a 2018 Chevrolet Silverado include the trailer brake system not functioning properly, the manual trailer brake not applying correctly, and the illumination of the "Service Trailer Brake System" warning light on the dashboard.

2. What causes the Manual Trailer Brake Apply Request Signal 1 Malfunction in a 2018 Chevrolet Silverado?

The Manual Trailer Brake Apply Request Signal 1 Malfunction (OBDII code C1116) in a 2018 Chevrolet Silverado is typically caused by issues with the trailer brake control module, faulty wiring connections, or a malfunctioning brake switch.

3. How can I diagnose the OBDII code C1116 in my 2018 Chevrolet Silverado?

To diagnose OBDII code C1116 in a 2018 Chevrolet Silverado, you can use a diagnostic scanner to retrieve the specific fault code. Additionally, checking the trailer brake system components, wiring connections, and brake switch for any visible damage or loose connections can help pinpoint the issue.

4. Can I still drive my 2018 Chevrolet Silverado with OBDII code C1116?

It is not recommended to drive your 2018 Chevrolet Silverado with OBDII code C1116 as the manual trailer brake system may not function correctly, posing a safety risk when towing a trailer. It is advisable to have the issue diagnosed and repaired before using the trailer brake system.

5. How do I repair OBDII code C1116 in my 2018 Chevrolet Silverado?

Repairing OBDII code C1116 in a 2018 Chevrolet Silverado involves inspecting and repairing any damaged wiring connections, replacing the faulty trailer brake control module if necessary, and ensuring the brake switch is functioning properly. A qualified technician can assist with diagnosing and resolving the issue.

6. Is OBDII code C1116 a common issue in 2018 Chevrolet Silverado vehicles?

While OBDII code C1116 (Manual Trailer Brake Apply Request Signal 1 Malfunction) is not extremely common in 2018 Chevrolet Silverado vehicles, it can occur due to various factors affecting the trailer brake system components.

7. Can weather conditions affect the occurrence of OBDII code C1116 in a 2018 Chevrolet Silverado?

Extreme weather conditions, such as exposure to moisture or corrosion, can potentially impact the trailer brake system components and wiring, leading to the Manual Trailer Brake Apply Request Signal 1 Malfunction (OBDII code C1116) in a 2018 Chevrolet Silverado.

8. Are there any preventive maintenance measures to avoid OBDII code C1116 in a 2018 Chevrolet Silverado?

Regularly inspecting the trailer brake system components, ensuring proper wiring connections, and keeping the brake system clean and free from debris can help prevent issues like OBDII code C1116 in a 2018 Chevrolet Silverado.

9. How much does it typically cost to repair OBDII code C1116 in a 2018 Chevrolet Silverado?

The cost to repair OBDII code C1116 in a 2018 Chevrolet Silverado can vary depending on the exact cause of the issue, the need for parts replacement, and labor costs. It is advisable to obtain a diagnostic and repair estimate from a trusted automotive professional.

10. Can resetting the OBDII system clear the C1116 code in a 2018 Chevrolet Silverado?

While resetting the OBDII system may temporarily clear the C1116 code in a 2018 Chevrolet Silverado, it is crucial to address the underlying cause of the issue to prevent the code from reappearing. It is recommended to diagnose and repair the problem for a lasting solution.