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U0137 Chevrolet Code - Lost Communication with Trailer Brake Control Module

Quick Answer

The U0137 code for Chevrolet vehicles indicates that there is a communication error between the vehicle's onboard computer system and the trailer brake control module. Common causes include Faulty wiring connections between the vehicle's computer system and the trailer brake control module, Damaged trailer brake control module, Issues with the vehicle's computer system. 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 Chevrolet indicates Lost Communication with Trailer Brake Control Module.
Common causes
Common causes include Faulty wiring connections between the vehicle's computer system and the trailer brake control module, Damaged trailer brake control module, Issues with the vehicle's computer system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code U0137 Chevrolet Description

The U0137 code for Chevrolet vehicles indicates that there is a communication error between the vehicle's onboard computer system and the trailer brake control module. The trailer brake control module is responsible for controlling the trailer brakes when towing a trailer. When communication is lost with this module, it can lead to issues with the trailer brake system, potentially compromising the vehicle's ability to tow trailers safely.

OBDII Code U0137 Chevrolet - Lost Communication with Trailer Brake Control Module
U0137 Chevrolet Code - Lost Communication with Trailer Brake Control Module

Common Causes of U0137 Chevrolet

  1. Faulty wiring connections between the vehicle's computer system and the trailer brake control module
  2. Damaged trailer brake control module
  3. Issues with the vehicle's computer system
  4. Corrosion or damage to electrical connections
  5. Software issues with the vehicle's computer system

Symptoms of U0137 Chevrolet

  1. Trailer brake system not responding or functioning properly
  2. Warning lights related to trailer brake system on the dashboard
  3. Inability to tow trailers safely
  4. Erratic trailer brake behavior while towing

How to Fix U0137 Chevrolet

  1. Begin by checking the wiring connections between the vehicle's computer system and the trailer brake control module for any signs of damage or corrosion. Repair or replace any damaged wiring as needed.
  2. Test the trailer brake control module to ensure it is functioning properly. Replace the module if necessary.
  3. Check the vehicle's computer system for any software issues that may be causing the communication error. Update the software if needed.
  4. Clear the U0137 code from the vehicle's computer system using a diagnostic scanner.
  5. Test the trailer brake system to ensure it is functioning properly after the repair.

Cost to Fix U0137 Chevrolet

The cost of repairing a U0137 code on a Chevrolet vehicle can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the cost of parts and labor for this repair can range from $200 to $500. It's important to keep in mind that additional diagnostic time may be needed to pinpoint the exact cause of the communication error, which can impact the overall cost of the repair. Be sure to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's specific needs.

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Information for Specific Chevrolet Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U0137 Chevrolet Code

1. What are common symptoms of the U0137 OBDII code in a Chevrolet related to lost communication with the trailer brake control module?

Symptoms may include the trailer brake system not functioning properly, the trailer brake warning light illuminating on the dashboard, and potential issues with trailer braking while towing.

2. What are some possible causes of the U0137 OBDII code in a Chevrolet indicating lost communication with the trailer brake control module?

Potential causes may include a faulty trailer brake control module, damaged wiring or connectors between the module and the vehicle, or issues with the vehicle's network communication system.

3. How can I diagnose the U0137 OBDII code in a Chevrolet related to lost communication with the trailer brake control module?

Diagnosis typically involves checking the trailer brake control module for power and ground, inspecting wiring for damage, and using a scan tool to communicate with the module and identify any communication faults.

4. Can a DIY enthusiast repair the U0137 OBDII code in a Chevrolet caused by lost communication with the trailer brake control module?

While some basic troubleshooting steps can be taken, diagnosing and repairing communication issues with the trailer brake control module often require specialized tools and expertise, making it a job best left to professionals.

5. Are there any specific repair tips for addressing the U0137 OBDII code in a Chevrolet associated with lost communication with the trailer brake control module?

Ensure all wiring connections related to the trailer brake control module are secure and free of corrosion, consider performing a software update on the module if available, and consult with a qualified technician for proper diagnosis and repair.

6. Is it safe to continue driving a Chevrolet with the U0137 OBDII code indicating lost communication with the trailer brake control module?

It is not recommended to continue driving the vehicle without addressing the U0137 code, as it may lead to potential safety hazards, especially when towing a trailer that relies on the trailer brake system.

7. How much does it typically cost to repair the U0137 OBDII code in a Chevrolet due to lost communication with the trailer brake control module?

Repair costs can vary depending on the specific cause of the communication issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can the U0137 OBDII code in a Chevrolet be triggered intermittently, or does it typically stay illuminated once detected?

The U0137 code related to lost communication with the trailer brake control module can sometimes be intermittent, especially if the communication fault is sporadic. However, it is essential to address the underlying issue promptly.

9. Are there any recalls or technical service bulletins (TSBs) related to the U0137 OBDII code in Chevrolet vehicles concerning lost communication with the trailer brake control module?

It is recommended to check with Chevrolet dealership or the manufacturer's website for any recalls or TSBs related to the U0137 code, as they may provide valuable information or potential solutions for this issue.

10. How can I prevent the U0137 OBDII code from reoccurring in my Chevrolet following repairs for lost communication with the trailer brake control module?

Regularly inspecting and maintaining the trailer brake system, ensuring proper wiring connections are secure, and addressing any underlying network communication issues promptly can help prevent the recurrence of the U0137 code in the future.

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