U0137 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC U0137 2018 Chevrolet Silverado?
- 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 2018 Chevrolet Silverado?
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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado Code
1. What does the OBDII code U0137 mean on a 2018 Chevrolet Silverado?
The U0137 code indicates a loss of communication with the Trailer Brake Control Module (TBCM).
2. What are the common symptoms of the U0137 code?
Symptoms include the trailer brake system not functioning, warning lights on the dashboard, and potential issues with towing performance.
3. What causes the U0137 code to appear?
Common causes include faulty wiring or connectors between the TBCM and other modules, a malfunctioning TBCM, or a failed power or ground connection.
4. Can driving with the U0137 code cause further damage?
While it may not directly harm the vehicle, towing without functional trailer brakes can be dangerous and may lead to accidents.
5. How can I diagnose the U0137 code on my Silverado?
Start by inspecting the TBCM wiring and connectors for damage or corrosion, checking the module’s power and ground, and using a scan tool to verify communication.
6. Is the Trailer Brake Control Module typically the issue with U0137?
Not always. While the TBCM can fail, the issue is more often caused by damaged wiring, loose connections, or software issues.
7. Can I fix the U0137 code myself?
If you're experienced with automotive repairs, you can inspect and repair wiring or connectors. However, module testing and programming may require professional tools.
8. How much does it cost to repair the U0137 code?
Repair costs vary but typically range from $100 to $500, depending on whether it’s a wiring issue or a TBCM replacement.
9. Does the U0137 code require TBCM reprogramming?
If the TBCM is replaced, it will likely need reprogramming with a GM-specific scan tool.
10. Can a blown fuse cause the U0137 code?
Yes, a blown fuse in the circuit powering the TBCM can cause the module to lose communication, triggering the code.
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