C1116 2017 GMC Sierra Code - Manual Trailer Brake Apply Request Signal 1 Malfunction
Quick Answer
The C1116 code for a 2017 GMC Sierra indicates a Manual Trailer Brake Apply Request Signal 1 Malfunction. Common causes include Faulty brake controller, Wiring issues or shorts in the trailer brake system, Malfunctioning trailer brake actuator. 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
- C1116 2017 GMC Sierra indicates Manual Trailer Brake Apply Request Signal 1 Malfunction.
- Common causes
- Common causes include Faulty brake controller, Wiring issues or shorts in the trailer brake system, Malfunctioning trailer brake actuator.
- 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 C1116 2017 GMC Sierra Description
The C1116 code for a 2017 GMC Sierra indicates a Manual Trailer Brake Apply Request Signal 1 Malfunction. This means that there is an issue with the signal being sent to manually apply the trailer brakes. In vehicles equipped with trailer brakes, this signal is crucial for controlling the braking of the trailer when towing. When this signal malfunctions, it can lead to difficulties in controlling the trailer's braking system, potentially compromising the safety and stability of the vehicle and trailer combination.
Common Causes of C1116 2017 GMC Sierra
- Faulty brake controller
- Wiring issues or shorts in the trailer brake system
- Malfunctioning trailer brake actuator
- Corrosion or poor connections in the electrical system
- Sensor failure in the brake control module
Symptoms of C1116 2017 GMC Sierra
- Dashboard warning lights related to the trailer brake system
- Uneven braking between the vehicle and trailer
- Swaying or instability when towing
- Longer stopping distances
- Inconsistent trailer brake operation
How to Fix C1116 2017 GMC Sierra
- Diagnose the specific cause of the Manual Trailer Brake Apply Request Signal 1 Malfunction using a diagnostic scanner and multimeter to test the electrical components.
- Inspect the wiring harness for any damage, corrosion, or loose connections, repairing or replacing as necessary.
- Test the trailer brake actuator and sensor for proper function, replacing them if found to be faulty.
- Check the brake controller for proper operation and calibration, recalibrating or replacing it if needed.
- Clear the diagnostic trouble codes, reset the system, and test the trailer brake system to ensure proper functionality.
Cost to Fix C1116 2017 GMC Sierra
The typical repair costs for addressing a Manual Trailer Brake Apply Request Signal 1 Malfunction can range from $200 to $500, depending on the specific cause of the issue and the parts needed for repair. This estimate includes the cost of diagnostic testing, replacement parts, and labor. However, it's important to note that actual repair costs can vary based on factors such as location, vehicle make and model, and the rates charged by auto repair shops. It's recommended to obtain quotes from local shops to get a more accurate estimate for this repair.
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Frequently Asked Questions about C1116 2017 GMC Sierra Code
1. What does the OBDII code C1116 mean on a 2017 GMC Sierra?
C1116 indicates a malfunction in the Manual Trailer Brake Apply Request Signal 1, which is part of the trailer brake control system.
2. What are common symptoms of the C1116 code?
Symptoms include the trailer brakes not engaging when manually applied, warning messages or lights on the dashboard, and possible loss of trailer braking functionality.
3. What causes the C1116 code to appear?
Common causes include a faulty trailer brake control switch, damaged wiring or connectors in the trailer brake circuit, or a malfunctioning trailer brake control module.
4. Can the C1116 code be triggered by a problem with the trailer itself?
Yes, issues such as a short in the trailer wiring, a faulty trailer brake system, or an incompatible trailer brake controller can trigger the code.
5. How do you diagnose the C1116 code on a 2017 GMC Sierra?
Diagnosis involves scanning for codes, inspecting the trailer brake control switch, checking wiring and connectors, and testing the trailer brake control module for proper operation.
6. Can I still drive my GMC Sierra with the C1116 code active?
Yes, but trailer braking functionality may be compromised, making towing unsafe. It’s recommended to address the issue promptly.
7. How do I fix the C1116 code?
Repairs may include replacing the trailer brake control switch, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the trailer brake control module.
8. Is the C1116 code covered under warranty for a 2017 GMC Sierra?
It depends on the vehicle’s warranty status and coverage. Consult your GMC dealership for specific details.
9. Can a low battery voltage cause the C1116 code?
While uncommon, low battery voltage or electrical issues in the vehicle’s system can potentially cause malfunctions in the trailer brake control system.
10. How much does it cost to repair the C1116 code on a 2017 GMC Sierra?
Repair costs can vary depending on the specific issue but may range from $100 for simple wiring repairs to $500 or more for module replacement.
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