AutoCodes – Chevrolet – U0137 Chevrolet

U0137 Chevrolet Code - Lost Communication with Trailer Brake Control Module

Quick Answer

Modules connected to the high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Trailer Brake Control Module, Trailer Brake Control Module harness is open or shorted, Trailer Brake Control Module circuit poor electrical connection. 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 Trailer Brake Control Module, Trailer Brake Control Module harness is open or shorted, Trailer Brake Control Module circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 8,306

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 21, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U0137 Chevrolet Description

Modules connected to the high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages need to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) will be set when the device setting the DTC has attempted to establish communications on the serial data circuits more than 3 times in 5 s.

OBDII Code U0137 Chevrolet - Lost Communication with Trailer Brake Control Module - AutoCodes.com — U0137 Chevrolet Code - Lost Communication with Trailer Brake Control Module

What does this mean?

What are the Possible Causes of the DTC U0137 Chevrolet?

Faulty Trailer Brake Control Module
Trailer Brake Control Module harness is open or shorted
Trailer Brake Control Module circuit poor electrical connection

How to Fix the DTC U0137 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0137 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U0137 Chevrolet code?

Need more information on how to fix the U0137 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0137 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

U0137 2014 Chevrolet Silverado — Lost Communication with Trailer Brake Control Module
U0137 2015 Chevrolet Silverado — Lost Communication with Trailer Brake Control Module
U0137 2016 Chevrolet Silverado — Lost Communication with Trailer Brake Control Module
U0137 2017 Chevrolet Silverado — Lost Communication with Trailer Brake Control Module
U0137 2018 Chevrolet Silverado — Lost Communication with Trailer Brake Control Module

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.