C111A GMC Code - Trailer Brake Power Control Module
Quick Answer
The C111A GMC code refers to an issue with the Trailer Brake Power Control Module in the vehicle. Common causes include Corrosion or damage to the wiring harness connected to the Trailer Brake Power Control Module, Faulty trailer brake sensors or connectors, Electrical issues within the module itself. 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 GMC indicates Trailer Brake Power Control Module.
- Common causes
- Common causes include Corrosion or damage to the wiring harness connected to the Trailer Brake Power Control Module, Faulty trailer brake sensors or connectors, Electrical issues within the module itself.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code C111A GMC Description
The C111A GMC code refers to an issue with the Trailer Brake Power Control Module in the vehicle. This module is responsible for controlling the power distribution to the trailer brakes when towing a trailer. When this code appears, it indicates that there is a malfunction or communication error within the module, which can affect the vehicle's ability to control the trailer brakes properly.
Common Causes of C111A GMC
- Corrosion or damage to the wiring harness connected to the Trailer Brake Power Control Module
- Faulty trailer brake sensors or connectors
- Electrical issues within the module itself
- Water or moisture intrusion into the module
- Poor connections or loose wiring related to the trailer brake system
Symptoms of C111A GMC
- Trailer brakes not responding properly when towing
- ABS warning light illuminated on the dashboard
- Trailer brake system error message displayed
- Trailer brakes locking up or not engaging when braking
- Loss of trailer brake power while driving
How to Fix C111A GMC
- Begin by inspecting the wiring harness and connectors for any signs of corrosion, damage, or loose connections. Repair or replace any damaged components.
- Check the trailer brake sensors and connectors for proper functionality. Replace any faulty sensors or connectors as needed.
- Test the Trailer Brake Power Control Module for electrical issues using a diagnostic tool. Replace the module if necessary.
- Clear the diagnostic trouble codes from the vehicle's system and test the trailer brake system to ensure proper functionality.
- Perform a final road test to confirm that the trailer brakes are responding correctly and that the issue has been resolved.
Cost to Fix C111A GMC
The typical repair costs for addressing the C111A GMC code related to the Trailer Brake Power Control Module can range from $200 to $500, depending on the extent of the repairs needed and the cost of replacement parts. This estimate includes both parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is recommended to check with local shops for a more accurate estimate based on your specific vehicle make and model.
Need more information about the C111A GMC code?
Need more information on how to fix the C111A GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C111A GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- C111A 2014 GMC Sierra — Trailer Brake Power Control Module
- C111A 2015 GMC Sierra — Trailer Brake Power Control Module
- C111A 2016 GMC Sierra — Trailer Brake Power Control Module
- C111A 2017 GMC Sierra — Trailer Brake Power Control Module
- C111A 2018 GMC Sierra — Trailer Brake Power Control Module
Frequently Asked Questions about C111A GMC Code
No Frequently Asked Questions about C111A GMC Code found.
Discuss the causes and fixes for C111A GMC OBDII Code
Code C111A GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.