C1117 GMC Code - Manual Trailer Brake Apply Request Signal 2 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
- C1117 GMC indicates Manual Trailer Brake Apply Request Signal 2 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.
Code C1117 GMC Description
What are the Possible Causes of the DTC C1117 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 C1117 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1117 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
- C1117 2014 GMC Sierra — Manual Trailer Brake Apply Request Signal 2 Malfunction
- C1117 2015 GMC Sierra — Manual Trailer Brake Apply Request Signal 2 Malfunction
- C1117 2016 GMC Sierra — Manual Trailer Brake Apply Request Signal 2 Malfunction
- C1117 2017 GMC Sierra — Manual Trailer Brake Apply Request Signal 2 Malfunction
- C1117 2018 GMC Sierra — Manual Trailer Brake Apply Request Signal 2 Malfunction
Frequently Asked Questions about C1117 GMC Code
1. What are the common symptoms of OBDII code C1117 GMC?
- Common symptoms include the trailer brake warning light on the dashboard, loss of trailer brake control, and potential issues with the manual trailer brake application.
2. What can cause the Manual Trailer Brake Apply Request Signal 2 Malfunction (C1117) in a GMC vehicle?
- Possible causes include damaged wiring harnesses, faulty trailer brake controller module, issues with the trailer brake switch, or a malfunctioning trailer brake actuator.
3. How can I diagnose the C1117 code in my GMC vehicle?
- Diagnosis typically involves checking the wiring connections, inspecting the trailer brake controller module, testing the trailer brake switch, and using an OBDII scanner to read the specific trouble code.
4. Can I still drive my GMC vehicle with the C1117 trouble code present?
- It is not recommended to drive the vehicle with the C1117 code as it may affect the trailer brake functionality, compromising safety when towing a trailer.
5. What are some repair tips for resolving the C1117 GMC code?
- Repair tips may include checking and repairing any damaged wiring, replacing the trailer brake controller module if necessary, ensuring proper connection of the trailer brake switch, and resetting the trouble code after repairs.
6. How important is it to address the C1117 code promptly?
- It is crucial to address the C1117 code promptly to ensure the proper functioning of the trailer brake system, especially when towing a trailer to maintain safety on the road.
7. Can resetting the trouble code fix the C1117 issue temporarily?
- Resetting the trouble code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear, indicating a persistent problem with the trailer brake system.
8. Is it possible to repair the C1117 code in a GMC vehicle without professional help?
- While some simple repairs like checking wiring connections can be done by DIY enthusiasts, diagnosing and repairing complex issues related to the C1117 code may require professional expertise.
9. How much does it typically cost to repair the C1117 code in a GMC vehicle?
- The cost of repairing the C1117 code can vary depending on the underlying issue, parts needed for replacement, labor costs, and whether the repair is done at a dealership or an independent garage.
10. Are there any preventive maintenance steps to avoid encountering the C1117 trouble code in the future?
- Regularly inspecting the trailer brake system, ensuring proper wiring connections, maintaining the trailer brake controller module, and following manufacturer guidelines for trailer brake usage can help prevent the occurrence of the C1117 code.
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