C1115 GMC Code - Manual Trailer Brake Apply Request Switch Signal
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
- C1115 GMC indicates Manual Trailer Brake Apply Request Switch Signal.
- 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.
Code C1115 GMC Description
What are the Possible Causes of the DTC C1115 GMC?
- 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 C1115 GMC?
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.
Code Tech Notes
C1115:5A Manual Trailer Brake Apply Request Switch Signal Plausibility Failure
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1115 GMC 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.
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Information for Specific GMC Models
- C1115 2014 GMC Sierra — Manual Trailer Brake Apply Request Switch Signal
- C1115 2015 GMC Sierra — Manual Trailer Brake Apply Request Switch Signal
- C1115 2016 GMC Sierra — Manual Trailer Brake Apply Request Switch Signal
- C1115 2017 GMC Sierra — Manual Trailer Brake Apply Request Switch Signal
- C1115 2018 GMC Sierra — Manual Trailer Brake Apply Request Switch Signal
Frequently Asked Questions about C1115 GMC Code
1. What are the common symptoms of OBDII code C1115 for Manual Trailer Brake Apply Request Switch Signal?
The common symptoms include the trailer brake system not engaging when manually activated, warning lights on the dashboard related to the trailer brake system, and potential loss of trailer braking functionality.
2. What are some possible causes of OBDII code C1115 for Manual Trailer Brake Apply Request Switch Signal?
Possible causes include a faulty manual trailer brake apply request switch, damaged wiring or connectors in the trailer brake system, or issues with the trailer brake control module.
3. How can I diagnose the cause of OBDII code C1115 for Manual Trailer Brake Apply Request Switch Signal?
Diagnosis involves checking the condition of the manual trailer brake apply request switch, inspecting the wiring and connectors for any damage or loose connections, and testing the trailer brake control module for proper function.
4. Can a DIY enthusiast repair OBDII code C1115 for Manual Trailer Brake Apply Request Switch Signal?
Some basic repairs, such as checking and replacing damaged wiring or connectors, can be done by a DIY enthusiast. However, more complex repairs involving the trailer brake control module may require professional assistance.
5. Is it safe to drive with OBDII code C1115 for Manual Trailer Brake Apply Request Switch Signal activated?
It is not recommended to drive with this code activated, as it may result in the trailer brake system not functioning properly, potentially compromising safety while towing a trailer.
6. How can I reset OBDII code C1115 for Manual Trailer Brake Apply Request Switch Signal?
Resetting the code typically involves using an OBDII scanner to clear the code after the underlying issue with the manual trailer brake apply request switch signal has been addressed.
7. Are there any preventive measures to avoid OBDII code C1115 for Manual Trailer Brake Apply Request Switch Signal?
Regular inspection and maintenance of the trailer brake system, including checking the condition of the manual trailer brake apply request switch and ensuring proper wiring connections, can help prevent this code from occurring.
8. Can extreme weather conditions affect OBDII code C1115 for Manual Trailer Brake Apply Request Switch Signal?
Extreme weather conditions, such as moisture or corrosion due to exposure to water or road salt, can potentially impact the manual trailer brake apply request switch signal and contribute to the activation of this OBDII code.
9. What role does the manual trailer brake apply request switch play in the trailer brake system?
The manual trailer brake apply request switch allows the driver to manually engage the trailer brakes independently of the vehicle's braking system, providing additional control and safety while towing a trailer.
10. How long does it typically take to repair OBDII code C1115 for Manual Trailer Brake Apply Request Switch Signal?
The repair time can vary depending on the specific cause of the code and the complexity of the repair needed. Simple fixes like replacing a faulty switch may take a short time, while more involved repairs may require additional time for diagnosis and parts replacement.
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