C111A 2018 GMC Sierra Code - Trailer Brake Power Control Module
Quick Answer
The C111A diagnostic trouble code (DTC) specifically relates to the Trailer Brake Power Control Module in a 2018 GMC Sierra. Common causes include Faulty Trailer Brake Power Control Module, Wiring issues or connections related to the module, Corrosion or damage to the module connectors. 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 GMC Sierra indicates Trailer Brake Power Control Module.
- Common causes
- Common causes include Faulty Trailer Brake Power Control Module, Wiring issues or connections related to the module, Corrosion or damage to the module connectors.
- 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 C111A 2018 GMC Sierra Description
The C111A diagnostic trouble code (DTC) specifically relates to the Trailer Brake Power Control Module in a 2018 GMC Sierra. This code indicates a problem with the trailer brake power control module, which is responsible for controlling the power supply to the trailer brakes. The module ensures that the trailer brakes receive the appropriate amount of power to assist in braking when towing a trailer.
Common Causes of C111A 2018 GMC Sierra
- Faulty Trailer Brake Power Control Module
- Wiring issues or connections related to the module
- Corrosion or damage to the module connectors
- Electrical system malfunctions within the module
- Software glitches or programming errors in the module
Symptoms of C111A 2018 GMC Sierra
- Dashboard warning lights related to trailer brake system
- Inconsistent braking performance when towing a trailer
- Trailer brakes not engaging properly
- Vehicle pulls to one side when braking while towing a trailer
- Abnormal sounds coming from the trailer brake system
How to Fix C111A 2018 GMC Sierra
- Diagnose the specific cause of the C111A code using a diagnostic scanner
- Inspect the Trailer Brake Power Control Module and associated wiring for any visible damage or corrosion
- Test the module's functionality and connections to ensure proper communication with the ECU
- Replace the Trailer Brake Power Control Module if it is determined to be faulty
- Clear the DTC and test the trailer brake system to verify proper operation
Cost to Fix C111A 2018 GMC Sierra
The cost of repairing a Trailer Brake Power Control Module issue can vary depending on the extent of the problem and the specific components that need to be replaced. Typically, the cost of a new module can range from $200 to $500, while labor costs can range from $100 to $300. Overall, the total repair cost for addressing a C111A DTC related to the Trailer Brake Power Control Module can be around $300 to $800. It is important to note that these estimates are approximate, and actual costs may vary based on individual circumstances and location. It is advisable to consult with a certified mechanic or dealership for a more accurate cost assessment.
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