U0137 Buick Code - Lost Communication with Trailer Brake Control Module
Quick Answer
The U0137 Buick code indicates that there is a communication problem between the vehicle's engine control module (ECM) and the trailer brake control module. Common causes include Faulty trailer brake control module, Wiring issues or damaged wiring harness, Corrosion or poor connections in the communication network. 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 Buick indicates Lost Communication with Trailer Brake Control Module.
- Common causes
- Common causes include Faulty trailer brake control module, Wiring issues or damaged wiring harness, Corrosion or poor connections in the communication network.
- 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 Buick Description
The U0137 Buick code indicates that there is a communication problem between the vehicle's engine control module (ECM) and the trailer brake control module. The trailer brake control module is responsible for managing the trailer brake system, ensuring that the trailer brakes operate correctly in conjunction with the vehicle's brakes. When communication is lost between the ECM and the trailer brake control module, it can lead to issues with the trailer brake system's functionality.
Common Causes of U0137 Buick
- Faulty trailer brake control module
- Wiring issues or damaged wiring harness
- Corrosion or poor connections in the communication network
- ECM software or hardware issues
- Electrical interference from other vehicle components
Symptoms of U0137 Buick
- Dashboard warning light related to trailer brake system
- Inoperative trailer brakes
- Delayed response from trailer brakes
- Erratic trailer brake behavior
- Loss of trailer brake functionality
How to Fix U0137 Buick
- Begin by conducting a thorough inspection of the trailer brake control module and wiring harness for any visible damage or corrosion.
- Check the communication network between the ECM and trailer brake control module for any loose connections or faulty wiring.
- Use a diagnostic scanner to retrieve and clear the U0137 code, then test the communication between the ECM and trailer brake control module.
- If necessary, replace the trailer brake control module or repair any damaged wiring to restore proper communication.
- Finally, clear the code from the vehicle's system and test the trailer brake functionality to ensure the issue has been resolved.
Cost to Fix U0137 Buick
The typical repair costs for addressing the U0137 Buick code can vary depending on the specific cause of the communication issue. In general, the cost of parts such as a new trailer brake control module or wiring harness repairs can range from $200 to $600. Labor costs for diagnosing and repairing the problem may add an additional $100 to $300 to the total repair bill. It's important to note that these estimates are rough averages, and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate tailored to your specific situation.
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Frequently Asked Questions about U0137 Buick Code
What does the OBDII code U0137 mean for a Buick?
U0137 indicates the vehicle has lost communication with the Trailer Brake Control Module, preventing proper operation of trailer braking systems.
What are the common symptoms of code U0137 in a Buick?
Symptoms may include the trailer brake system not functioning, a warning light on the dashboard, or reduced towing capability.
What causes the U0137 code to appear in a Buick?
Common causes include faulty wiring or connectors, a malfunctioning Trailer Brake Control Module, or issues with the CAN bus communication network.
Can I drive my Buick with the U0137 code active?
While the vehicle may still be drivable, towing a trailer without functioning trailer brakes can be unsafe and should be avoided.
How can I diagnose the U0137 code on a Buick?
Check for damaged, corroded, or loose wiring and connectors near the Trailer Brake Control Module. Use a scan tool to check for related communication errors.
How do I fix the U0137 code on a Buick?
Repairs may involve replacing damaged wiring, reconnecting loose connectors, or replacing the faulty Trailer Brake Control Module.
Where is the Trailer Brake Control Module located in a Buick?
The Trailer Brake Control Module is typically located near the rear of the vehicle, often near the trailer hitch area or under the cargo compartment.
Can a software update fix the U0137 code in a Buick?
In some cases, updating the software for the vehicle’s control modules may resolve communication issues, but physical repairs may still be required.
How much does it cost to repair the U0137 code on a Buick?
Repair costs can vary widely, ranging from $50 for simple wiring repairs to over $500 for replacing the Trailer Brake Control Module.
Should I take my Buick to a professional for the U0137 code?
If you’re unfamiliar with diagnosing or repairing vehicle electronics, it’s advisable to consult a certified mechanic to ensure proper repairs.
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