C1117 2018 GMC Sierra Code - Manual Trailer Brake Apply Request Signal 2 Malfunction
Quick Answer
The C1117 code for a 2018 GMC Sierra indicates a Manual Trailer Brake Apply Request Signal 2 Malfunction. Common causes include Faulty trailer brake controller, Wiring issues in the trailer brake system, Malfunctioning brake switch. 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 controller, Wiring issues in the trailer brake system, Malfunctioning brake switch.
- 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 C1117 2018 GMC Sierra Description
The C1117 code for a 2018 GMC Sierra indicates a Manual Trailer Brake Apply Request Signal 2 Malfunction. This code is specifically related to the trailer brake system in the vehicle. When a trailer is connected to the Sierra, the vehicle's brake controller sends signals to the trailer brakes to help with braking and control while towing. The Manual Trailer Brake Apply Request Signal 2 Malfunction means that there is an issue with the signal being sent to the trailer brakes, which can impact the effectiveness of the braking system while towing.
Common Causes of C1117 2018 GMC Sierra
- Faulty trailer brake controller.
- Wiring issues in the trailer brake system.
- Malfunctioning brake switch.
- ECU issues affecting the trailer brake signals.
- Corrosion or damage to the electrical connections in the trailer brake system.
Symptoms of C1117 2018 GMC Sierra
- Illumination of the trailer brake warning light on the dashboard.
- Inconsistent or delayed response from the trailer brakes when applying the vehicle's brakes.
- Difficulty in controlling the trailer while braking, leading to swaying or instability.
- Increased stopping distances when towing a trailer.
- Error messages related to the trailer brake system on the vehicle's information display.
How to Fix C1117 2018 GMC Sierra
- Begin by conducting a thorough inspection of the trailer brake system, including the controller, wiring, brake switch, and ECU connections.
- Test the trailer brake controller to determine if it is sending the correct signals to the trailer brakes.
- Check the wiring for any damage, corrosion, or loose connections that may be affecting the signal transmission.
- Inspect the brake switch for proper functionality and replace if necessary.
- If the issue persists, consult the vehicle's service manual or seek professional assistance to diagnose and repair any underlying ECU problems.
Cost to Fix C1117 2018 GMC Sierra
The cost of repairing a Manual Trailer Brake Apply Request Signal 2 Malfunction on a 2018 GMC Sierra can vary depending on the specific cause of the issue and the extent of repairs needed. On average, the parts and labor for this repair could range from $200 to $500. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is advisable to obtain quotes from multiple sources to get a more accurate estimate for your location and vehicle.
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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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