U0137 Buick 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 Buick 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.
Code U0137 Buick Description
What are the Possible Causes of the DTC U0137 Buick?
- 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 Buick?
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 Buick 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.
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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.
Discuss the causes and fixes for U0137 Buick OBDII Code
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