C1117 2018 GMC Sierra 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 2018 GMC Sierra 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 2018 GMC Sierra Description
What are the Possible Causes of the DTC C1117 2018 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 C1117 2018 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1117 2018 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.
Need more information about the C1117 2018 GMC Sierra code?
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Frequently Asked Questions about C1117 2018 GMC Sierra Code
1. What are common symptoms of OBDII code C1117 on a 2018 GMC Sierra?
- Common symptoms include issues with the manual trailer brake apply request signal, such as the trailer brakes not engaging properly or the brake controller malfunctioning.
2. What can cause the Manual Trailer Brake Apply Request Signal 2 Malfunction in a 2018 GMC Sierra?
- Possible causes include faulty wiring connections, a defective brake controller module, issues with the trailer brake system, or a malfunctioning brake pedal position sensor.
3. How can I diagnose the C1117 code on my 2018 GMC Sierra related to the manual trailer brake signal?
- To diagnose the issue, check the wiring connections between the brake controller module and the trailer brake system, inspect the brake controller for any visible damage, and test the brake pedal position sensor for proper functionality.
4. Can a DIY enthusiast repair the Manual Trailer Brake Apply Request Signal 2 Malfunction code on a 2018 GMC Sierra?
- While some basic checks like inspecting wiring connections can be done by a DIY enthusiast, diagnosing and repairing complex issues with the brake controller or sensor may require professional assistance.
5. Is it safe to drive my 2018 GMC Sierra with the C1117 code active?
- It is not recommended to drive the vehicle with the C1117 code active, as it may affect the proper functioning of the trailer brake system, potentially compromising safety while towing.
6. How much does it typically cost to repair the Manual Trailer Brake Apply Request Signal 2 Malfunction on a 2018 GMC Sierra?
- Repair costs can vary depending on the exact cause of the issue and labor rates in your area. It's advisable to get a diagnostic assessment from a qualified mechanic to determine the precise cost.
7. What steps can I take to prevent the C1117 code from recurring on my 2018 GMC Sierra?
- Regularly inspect and maintain the trailer brake system, ensure proper wiring connections, and address any brake controller issues promptly to help prevent the code from recurring.
8. Can a dealership service center reset the C1117 code on a 2018 GMC Sierra?
- Yes, a dealership service center with the appropriate diagnostic tools can reset the code after addressing the underlying issue with the manual trailer brake apply request signal.
9. Does the C1117 code on a 2018 GMC Sierra affect the vehicle's overall performance?
- While the code specifically relates to the manual trailer brake signal, unresolved issues with the brake system can impact overall performance and safety when towing a trailer.
10. How urgent is it to address the Manual Trailer Brake Apply Request Signal 2 Malfunction code on a 2018 GMC Sierra?
- It is advisable to address the C1117 code promptly to ensure the proper functioning of the trailer brake system and maintain safe towing conditions.
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