C1118 2016 Chevrolet Silverado Code - Trailer Brake Control Sensitivity Switch Circuit 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
- C1118 2016 Chevrolet Silverado indicates Trailer Brake Control Sensitivity Switch Circuit 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 C1118 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC C1118 2016 Chevrolet Silverado?
- 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 C1118 2016 Chevrolet Silverado?
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 C1118 2016 Chevrolet Silverado 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 C1118 2016 Chevrolet Silverado Code
1. What does the OBDII code C1118 mean on a 2016 Chevrolet Silverado?
C1118 indicates a malfunction in the Trailer Brake Control Sensitivity Switch Circuit, which is responsible for adjusting the trailer brake force based on driver input.
2. What are the common symptoms of code C1118 on a Chevrolet Silverado?
Symptoms may include a Trailer Brake System warning message, inability to adjust trailer brake sensitivity, and reduced or inconsistent trailer braking performance.
3. What causes the C1118 code to appear on a 2016 Silverado?
Common causes include a faulty trailer brake sensitivity switch, damaged wiring or connector issues in the switch circuit, or a malfunction in the trailer brake control module.
4. Can a defective trailer brake control module trigger code C1118?
Yes, a malfunctioning trailer brake control module can cause this code, as it plays a key role in processing the sensitivity switch signals.
5. How do I diagnose the C1118 code on a Chevrolet Silverado?
Start by inspecting the trailer brake sensitivity switch and its wiring for damage, corrosion, or loose connections. Use a scan tool to test the functionality of the switch and check for additional codes.
6. Can I still drive my Silverado with the C1118 code active?
Yes, you can still drive the vehicle, but towing a trailer could be unsafe due to impaired braking control. Address the issue before towing.
7. How do I fix the C1118 code on a 2016 Chevrolet Silverado?
Repairs may include replacing the trailer brake sensitivity switch, repairing damaged wiring or connectors, or reprogramming or replacing the trailer brake control module.
8. Is the C1118 code a common issue on 2016 Silverado models?
It’s not extremely common, but it can occur in vehicles that frequently tow trailers, as wear on the trailer brake components may lead to faults.
9. How much does it cost to repair the C1118 code on a Chevrolet Silverado?
Repair costs vary depending on the specific issue. Replacing the sensitivity switch can cost $50-$150 for parts, plus labor, while module replacement or wiring repairs may cost more.
10. Can a blown fuse cause the C1118 code on my Silverado?
Yes, a blown fuse in the trailer brake system circuit can disrupt the sensitivity switch operation and trigger the code. Always check fuses during diagnosis.
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