C111A 2017 GMC Sierra Code - Trailer Brake Power Control Module
Quick Answer
The C111A diagnostic code for a 2017 GMC Sierra indicates an issue with the Trailer Brake Power Control Module. Common causes include Electrical connection issues with the Trailer Brake Power Control Module, Faulty wiring or damaged harnesses, Corrosion or water damage to the 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 2017 GMC Sierra indicates Trailer Brake Power Control Module.
- Common causes
- Common causes include Electrical connection issues with the Trailer Brake Power Control Module, Faulty wiring or damaged harnesses, Corrosion or water damage to the 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.
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 2017 GMC Sierra Description
The C111A diagnostic code for a 2017 GMC Sierra indicates an issue with the Trailer Brake Power Control Module. This module is responsible for controlling the power supply to the trailer brakes when towing a trailer. When this code is triggered, it means that there is a malfunction or fault in the module, which can affect the vehicle's ability to control the trailer brakes effectively.
Common Causes of C111A 2017 GMC Sierra
- Electrical connection issues with the Trailer Brake Power Control Module
- Faulty wiring or damaged harnesses
- Corrosion or water damage to the module
- Internal component failure within the module
- Software or programming issues affecting the module's operation
Symptoms of C111A 2017 GMC Sierra
- Trailer brakes not engaging properly
- Inconsistent braking performance while towing
- Dashboard warning light related to trailer brakes
- Trailer swaying or fishtailing during braking
- Loss of trailer brake functionality
How to Fix C111A 2017 GMC Sierra
- Begin by inspecting the wiring harness and electrical connections to the Trailer Brake Power Control Module for any visible damage or corrosion.
- Test the module using a diagnostic scanner to check for any internal faults or failures.
- Replace any damaged wiring or harnesses and ensure all connections are secure.
- If the module itself is faulty, replace it with a new unit compatible with the 2017 GMC Sierra.
- Finally, clear the diagnostic trouble codes and test the trailer brakes to ensure they are functioning correctly.
Cost to Fix C111A 2017 GMC Sierra
The cost of repairing the Trailer Brake Power Control Module on a 2017 GMC Sierra can vary depending on the extent of the issue and the price of replacement parts. On average, the parts for this repair can range from $150 to $500, while labor costs can add an additional $100 to $300. Overall, the total cost of the repair could be anywhere from $250 to $800. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, labor rates, and the specific components needed for the repair. It's recommended to consult with a professional mechanic for a more accurate cost estimate.
Need more information about the C111A 2017 GMC Sierra code?
Need more information on how to fix the C111A 2017 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C111A 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about C111A 2017 GMC Sierra Code
1. What does OBDII code C111A mean on a 2017 GMC Sierra related to the Trailer Brake Power Control Module?
OBDII code C111A indicates a communication issue with the Trailer Brake Power Control Module in your 2017 GMC Sierra.
2. What are the common symptoms of OBDII code C111A in a 2017 GMC Sierra?
Common symptoms of code C111A may include trailer brake system malfunctions, warning lights on the dashboard, and loss of trailer brake control.
3. What are the possible causes of OBDII code C111A on a 2017 GMC Sierra?
Potential causes of code C111A can include damaged wiring, faulty connectors, a malfunctioning control module, or a communication breakdown within the trailer brake system.
4. How can I diagnose OBDII code C111A in my 2017 GMC Sierra?
To diagnose code C111A, you may use an OBDII scanner to retrieve the specific fault codes, inspect the trailer brake system wiring for damage, and test the control module for proper functioning.
5. Can I still drive my 2017 GMC Sierra with OBDII code C111A?
It is not recommended to drive your GMC Sierra with unresolved code C111A, as it may affect the functionality of the trailer brake system and compromise safety while towing.
6. How can I repair OBDII code C111A on my 2017 GMC Sierra?
Repairing code C111A may involve repairing or replacing damaged wiring, checking and cleaning connectors, resetting the control module, or seeking assistance from a qualified technician.
7. Is it safe to tow a trailer with a 2017 GMC Sierra experiencing OBDII code C111A?
It is not safe to tow a trailer with a 2017 GMC Sierra showing code C111A, as it may lead to unpredictable trailer brake behavior and potential safety hazards.
8. Can I reset OBDII code C111A in a 2017 GMC Sierra by disconnecting the battery?
While disconnecting the battery may reset some fault codes, it is recommended to diagnose and address the root cause of code C111A to ensure proper functioning of the trailer brake system.
9. Will OBDII code C111A in a 2017 GMC Sierra cause the check engine light to illuminate?
Yes, code C111A related to the Trailer Brake Power Control Module can trigger the check engine light in a 2017 GMC Sierra due to the communication fault detected.
10. How much does it cost to repair OBDII code C111A on a 2017 GMC Sierra at a dealership?
The cost of repairing code C111A at a dealership can vary depending on the specific diagnosis, parts needed, and labor costs, so it's recommended to obtain a detailed estimate before proceeding with the repairs.
Discuss the causes and fixes for C111A 2017 GMC Sierra OBDII Code
Code C111A 2017 GMC Sierra 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.