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Engine-Codes – GMC – U010C 2018 GMC Sierra

U010C 2018 GMC Sierra Code - Lost Communication with Turbocharger Boost Control Module

Quick Answer

The U010C diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the vehicle's engine control module (ECM) has detected a communication failure with the turbocharger boost control module. Common causes include Faulty turbocharger boost control module, Wiring or connection issues between the ECM and turbocharger boost control module, ECM software or hardware malfunction. 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
U010C 2018 GMC Sierra indicates Lost Communication with Turbocharger Boost Control Module.
Common causes
Common causes include Faulty turbocharger boost control module, Wiring or connection issues between the ECM and turbocharger boost control module, ECM software or hardware malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code U010C 2018 GMC Sierra Description

The U010C diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the vehicle's engine control module (ECM) has detected a communication failure with the turbocharger boost control module. The turbocharger boost control module is responsible for regulating the amount of boost pressure generated by the turbocharger, which in turn affects the engine's performance and efficiency. When communication is lost with this module, it can lead to a variety of issues that impact the vehicle's overall performance.

OBDII Code U010C 2018 GMC Sierra - Lost Communication with Turbocharger Boost Control Module
U010C 2018 GMC Sierra Code - Lost Communication with Turbocharger Boost Control Module

Common Causes of U010C 2018 GMC Sierra

  1. Faulty turbocharger boost control module
  2. Wiring or connection issues between the ECM and turbocharger boost control module
  3. ECM software or hardware malfunction
  4. Electrical interference or signal disruption
  5. Water or moisture damage to the control module

Symptoms of U010C 2018 GMC Sierra

  1. Decreased engine power
  2. Rough idling or stalling
  3. Hesitation during acceleration
  4. Reduced fuel efficiency
  5. Limp mode activation

How to Fix U010C 2018 GMC Sierra

  1. Begin by conducting a thorough inspection of the wiring and connections between the ECM and turbocharger boost control module. Repair or replace any damaged wires or connectors.
  2. Check the turbocharger boost control module for any signs of damage or malfunction. Replace the module if necessary.
  3. Clear the DTC from the ECM's memory using a diagnostic scanner.
  4. Test drive the vehicle to ensure that the communication between the ECM and turbocharger boost control module has been restored and that the symptoms associated with the U010C code have been resolved.
  5. If the issue persists, consider seeking assistance from a professional mechanic or dealership for further diagnosis and repair.

Cost to Fix U010C 2018 GMC Sierra

The cost of repairing a U010C code on a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty turbocharger boost control module can cost between $200 and $500, including parts and labor. However, additional diagnostic time and labor costs may apply, with hourly rates typically ranging from $80 to $150. It is recommended to consult with a local auto repair shop or dealership for a more accurate estimate based on your location and vehicle specifications.

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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 U010C 2018 GMC Sierra Code

1. What does the OBDII code U010C mean on a 2018 GMC Sierra?

The U010C code indicates a loss of communication between the Powertrain Control Module (PCM) and the Turbocharger Boost Control Module.

2. What are the common symptoms of the U010C code?

Symptoms may include reduced engine power, poor acceleration, a lit check engine light, and possibly entering limp mode.

3. What causes the U010C code to appear?

Common causes include faulty wiring or connectors in the communication circuit, a failed Turbocharger Boost Control Module, or issues with the PCM.

4. Can I drive my 2018 GMC Sierra with the U010C code?

Driving is possible but not recommended, as the engine may perform poorly, and further damage could occur without proper turbocharger communication.

5. How is the U010C code diagnosed?

Diagnosis involves checking the wiring and connectors for damage, testing the Turbocharger Boost Control Module, and ensuring proper PCM functionality.

6. How do I fix the U010C code on my GMC Sierra?

Repairs may include repairing or replacing damaged wiring, reconnecting loose connectors, or replacing the Turbocharger Boost Control Module if it's defective.

7. Is the U010C code specific to the 2018 GMC Sierra?

No, the U010C code can appear on other vehicles with turbocharged engines, but the specific diagnosis and repair steps may vary.

8. How much does it cost to fix the U010C code?

Repair costs depend on the issue, ranging from $50 for simple wiring repairs to $500 or more if the Turbocharger Boost Control Module needs replacement.

9. Can a software update fix the U010C code?

In some cases, a PCM software update from the dealership may resolve communication issues, but only if the problem is software-related.

10. What tools are needed to troubleshoot the U010C code?

You’ll need an OBDII scanner capable of reading manufacturer-specific codes, a multimeter for testing circuits, and potentially wiring diagrams for your Sierra.

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