U0137 2017 GMC Sierra Code - Lost Communication with Trailer Brake Control Module
Quick Answer
The U0137 code for a 2017 GMC Sierra indicates that there is a communication error between the vehicle's onboard computer system and the Trailer Brake Control Module (TBCM). Common causes include Loose or corroded electrical connections between the vehicle's computer system and the TBCM, Damaged wiring harness leading to the TBCM, Faulty TBCM 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
- U0137 2017 GMC Sierra indicates Lost Communication with Trailer Brake Control Module.
- Common causes
- Common causes include Loose or corroded electrical connections between the vehicle's computer system and the TBCM, Damaged wiring harness leading to the TBCM, Faulty TBCM 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.
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Code U0137 2017 GMC Sierra Description
The U0137 code for a 2017 GMC Sierra indicates that there is a communication error between the vehicle's onboard computer system and the Trailer Brake Control Module (TBCM). The TBCM is responsible for controlling the trailer brakes and monitoring their performance. When communication is lost with this module, it can lead to issues with the trailer brake system, potentially compromising the vehicle's ability to control trailer braking and stability.
Common Causes of U0137 2017 GMC Sierra
- Loose or corroded electrical connections between the vehicle's computer system and the TBCM
- Damaged wiring harness leading to the TBCM
- Faulty TBCM module
- Water damage or exposure to moisture affecting the TBCM
- Software issues or programming errors within the vehicle's electronic control modules
Symptoms of U0137 2017 GMC Sierra
- Trailer brakes not responding or operating erratically
- Warning light on the dashboard indicating a trailer brake system fault
- Inconsistent or delayed braking response when towing a trailer
- ABS system engaging unexpectedly while towing a trailer
How to Fix U0137 2017 GMC Sierra
- Begin by inspecting the electrical connections between the vehicle's computer system and the TBCM. Ensure that all connections are secure, clean, and free of corrosion.
- Check the wiring harness for any signs of damage or wear. Repair or replace any damaged wiring as needed.
- Test the TBCM module for functionality using a diagnostic scanner. If the module is faulty, replace it with a new unit.
- Clear the U0137 code from the vehicle's computer system using a diagnostic scanner after completing the repairs.
- Perform a road test to verify that the trailer brake system is operating correctly and that communication with the TBCM has been restored.
Cost to Fix U0137 2017 GMC Sierra
The typical repair costs for addressing the U0137 code on a 2017 GMC Sierra can vary depending on the specific cause of the communication error. In general, replacing a faulty TBCM module can cost between $200 and $500, including parts and labor. Additional costs may apply if there are wiring issues or other underlying problems that need to be addressed. It's advisable to consult with a qualified mechanic or auto repair shop to obtain an accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates at auto repair shops can vary widely, so it's recommended to shop around for the best value.
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Frequently Asked Questions about U0137 2017 GMC Sierra Code
1. What does the OBDII code U0137 mean on a 2017 GMC Sierra?
The U0137 code indicates a loss of communication with the Trailer Brake Control Module (TBCM) on the vehicle's communication network.
2. What are common symptoms of the U0137 code in a 2017 GMC Sierra?
Common symptoms include the trailer brake system not functioning, a warning message on the dashboard, and possibly inoperative trailer lights.
3. What causes the U0137 code on a 2017 GMC Sierra?
Potential causes include a faulty Trailer Brake Control Module, damaged or corroded wiring, loose connections, or issues with the CAN bus network.
4. Can I drive my 2017 GMC Sierra with the U0137 code?
Yes, you can drive the vehicle, but the trailer brake system may not work, which is unsafe if towing a trailer.
5. How do you troubleshoot the U0137 code on a 2017 GMC Sierra?
Start by inspecting the TBCM wiring and connectors for damage or corrosion, checking the CAN bus network for faults, and testing the TBCM for proper operation.
6. How much does it cost to fix the U0137 code on a 2017 GMC Sierra?
Repair costs vary but could range from $100 to $500 depending on whether the issue is a simple wiring repair or a module replacement.
7. Where is the Trailer Brake Control Module located on a 2017 GMC Sierra?
The TBCM is typically located under the dashboard near the driver’s side or behind the rear seat area, depending on the vehicle configuration.
8. Can a bad battery cause the U0137 code on a 2017 GMC Sierra?
A weak or failing battery can sometimes cause communication issues on the CAN bus, which may trigger the U0137 code.
9. Do I need to reprogram the Trailer Brake Control Module if I replace it?
Yes, a new TBCM may need to be programmed or initialized with a scan tool to function properly.
10. Will clearing the U0137 code fix the issue?
Clearing the code may temporarily remove the warning, but the issue will likely return unless the underlying problem is resolved.
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