AutoCodes – GMC – U010C 2018 GMC Sierra

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

Quick Answer

Devices connected to the Powertrain High-Speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Turbocharger Vane Position Actuator, Turbocharger Vane Position Actuator harness is open or shorted, Turbocharger Vane Position Actuator 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: U010C 2018 GMC Sierra indicates Lost Communication with Turbocharger Boost Control Module.
Common causes: Common causes include Faulty Turbocharger Vane Position Actuator, Turbocharger Vane Position Actuator harness is open or shorted, Turbocharger Vane Position Actuator 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.

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Code Popularity 262

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 18, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U010C 2018 GMC Sierra Description

Devices connected to the Powertrain High-Speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored DTC. The DTC will be set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U010C 2018 GMC Sierra - Lost Communication with Turbocharger Boost Control Module - AutoCodes.com — U010C 2018 GMC Sierra Code - Lost Communication with Turbocharger Boost Control Module

What does this mean?

What are the Possible Causes of the DTC U010C 2018 GMC Sierra?

Faulty Turbocharger Vane Position Actuator
Turbocharger Vane Position Actuator harness is open or shorted
Turbocharger Vane Position Actuator circuit poor electrical connection

How to Fix the DTC U010C 2018 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 U010C 2018 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.

Need more information about the U010C 2018 GMC Sierra code?

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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?

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