C111A 2018 Chevrolet Silverado Code - Trailer Brake Power Control Module
Quick Answer
The internal fault detection is handled inside the Trailer Brake Power Control Module. Common causes include Faulty Trailer Brake Power Control Module. 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
- C111A 2018 Chevrolet Silverado indicates Trailer Brake Power Control Module.
- Common causes
- Common causes include Faulty Trailer Brake Power Control Module.
- 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 C111A 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC C111A 2018 Chevrolet Silverado?
- Faulty Trailer Brake Power Control Module
How to Fix the DTC C111A 2018 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 C111A 2018 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.
Need more information about the C111A 2018 Chevrolet Silverado code?
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Frequently Asked Questions about C111A 2018 Chevrolet Silverado Code
What does the OBDII code C111A mean on a 2018 Chevrolet Silverado?
C111A indicates an issue with the Trailer Brake Power Control Module, which controls the electric trailer brakes.
What are the common symptoms of code C111A in a 2018 Silverado?
Symptoms include the trailer brakes not functioning, a warning light on the dash, or a "Service Trailer Brake System" message.
What causes the C111A code to appear on a 2018 Chevrolet Silverado?
Common causes include a faulty Trailer Brake Power Control Module, wiring issues, poor ground connections, or a blown fuse.
How do I diagnose the C111A code on my Silverado?
Check the wiring and connectors for damage, test the trailer brake module for proper function, and inspect fuses related to the trailer brake system.
Can I still drive my 2018 Silverado with the C111A code?
Yes, you can drive the truck, but the trailer brakes may not function, which could be unsafe when towing.
How do I reset the C111A code after fixing the issue?
Clear the code using an OBDII scanner after verifying that the underlying issue has been resolved.
How much does it cost to repair the C111A code on a 2018 Silverado?
Repair costs vary, but replacing the trailer brake module can cost $200–$400, excluding labor. Wiring repairs may be less expensive.
Can a bad trailer connection cause code C111A?
Yes, a bad or corroded trailer connection can trigger this code by interfering with the trailer brake system's communication.
Do I need to replace the Trailer Brake Power Control Module to fix code C111A?
Not always. Start by inspecting and repairing any damaged wiring or connections. Replace the module only if it's confirmed to be faulty.
Is the C111A code specific to the 2018 Silverado?
No, this code can appear on other GM vehicles with a trailer brake system, but the diagnosis and repair process may vary slightly.
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