C1115 2016 GMC Sierra 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 2016 GMC Sierra 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 2016 GMC Sierra Description
What are the Possible Causes of the DTC C1115 2016 GMC Sierra?
- 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 2016 GMC Sierra?
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 2016 GMC Sierra 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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Frequently Asked Questions about C1115 2016 GMC Sierra Code
1. What are common symptoms of OBDII code C1115 in a 2016 GMC Sierra related to the Manual Trailer Brake Apply Request Switch Signal?
- Common symptoms include the trailer brake system not responding properly, the trailer brakes engaging unexpectedly, and dashboard warning lights related to the trailer brake system.
2. What are some possible causes of OBDII code C1115 in a 2016 GMC Sierra?
- Possible causes include a faulty manual trailer brake apply request switch, wiring issues in the trailer brake system, a malfunctioning trailer brake control module, or a problem with the trailer brake actuator.
3. How can I diagnose the cause of OBDII code C1115 in my 2016 GMC Sierra?
- To diagnose the issue, it is recommended to check the manual trailer brake apply request switch for proper operation, inspect the wiring for any damage or loose connections, and use a diagnostic scanner to read the specific fault codes stored in the trailer brake control module.
4. Is it safe to continue driving my 2016 GMC Sierra with OBDII code C1115 related to the Manual Trailer Brake Apply Request Switch Signal?
- It is not recommended to continue driving the vehicle with this code present, as it can affect the operation of the trailer brake system and potentially compromise safety when towing a trailer.
5. How can I repair OBDII code C1115 in my 2016 GMC Sierra?
- Repairing this code may involve replacing the manual trailer brake apply request switch, repairing any damaged wiring, resetting the trailer brake control module, or recalibrating the trailer brake system using a diagnostic tool.
6. Can I reset OBDII code C1115 in my 2016 GMC Sierra using a simple OBDII scanner?
- While clearing the fault code with an OBDII scanner may temporarily remove the warning light, it is important to address the underlying issue causing the code to prevent it from reoccurring.
7. Is it possible to bypass the manual trailer brake apply request switch to resolve OBDII code C1115 in my 2016 GMC Sierra?
- Bypassing the switch is not recommended, as it may compromise the functionality of the trailer brake system and pose a safety risk when towing a trailer.
8. How much does it typically cost to repair OBDII code C1115 in a 2016 GMC Sierra at a dealership or repair shop?
- The cost of repair can vary depending on the specific cause of the code, but it may involve parts and labor costs ranging from $100 to $500 or more.
9. Will fixing OBDII code C1115 in my 2016 GMC Sierra improve the overall performance of the trailer brake system?
- Yes, resolving this code will help ensure the proper operation of the trailer brake system, providing better control and safety when towing a trailer.
10. Can weather conditions or terrain affect the occurrence of OBDII code C1115 in a 2016 GMC Sierra?
- Extreme weather conditions or rough terrain may exacerbate existing issues with the trailer brake system, potentially leading to the triggering of OBDII code C1115. Regular maintenance and inspection can help prevent such occurrences.
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