U0137 2016 GMC Sierra 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 2016 GMC Sierra 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 2016 GMC Sierra Description
What are the Possible Causes of the DTC U0137 2016 GMC Sierra?
- 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 2016 GMC Sierra?
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 2016 GMC Sierra 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 2016 GMC Sierra Code
1. What does the OBDII code U0137 mean on a 2016 GMC Sierra?
The U0137 code indicates a loss of communication with the Trailer Brake Control Module (TBCM), meaning the module is not transmitting data to other components.
2. What are common symptoms of the U0137 code on a 2016 GMC Sierra?
Symptoms may include the trailer brake system not functioning, brake warning lights on the dashboard, or a “Service Trailer Brake System†message.
3. What causes the U0137 code on a 2016 GMC Sierra?
Common causes include a faulty Trailer Brake Control Module, damaged wiring or connectors in the communication circuit, or issues with the CAN (Controller Area Network) bus system.
4. Can a blown fuse cause the U0137 code on a 2016 GMC Sierra?
Yes, a blown fuse related to the Trailer Brake Control Module can interrupt communication and trigger the U0137 code.
5. How is the U0137 code diagnosed on a 2016 GMC Sierra?
A mechanic will check for other related codes, inspect the wiring and connectors to the TBCM, test the CAN bus system, and verify the module's functionality.
6. Can I still drive my 2016 GMC Sierra with the U0137 code?
Yes, the truck can still be driven, but the trailer brake system may not work. This can be unsafe if towing a trailer.
7. How do I fix the U0137 code on my 2016 GMC Sierra?
Repairs may include replacing the Trailer Brake Control Module, repairing damaged wiring or connectors, or resetting the CAN communication system.
8. How much does it cost to repair the U0137 code on a 2016 GMC Sierra?
Costs can vary, but replacing the Trailer Brake Control Module typically ranges from $200 to $500, plus labor.
9. Can a software update fix the U0137 code on a 2016 GMC Sierra?
In some cases, a software update for the TBCM or related modules may resolve the communication issue if it’s caused by a programming error.
10. How can I prevent the U0137 code from occurring on my 2016 GMC Sierra?
Regularly inspect the trailer brake wiring and connectors for damage or corrosion, and ensure the TBCM is securely mounted and functioning properly.
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