AutoCodes – GMC – C0381 GMC

C0381 GMC Code - Range Actuator System Performance High Temperature

Quick Answer

The Transfer Case Motor, also known as the transfer case range actuator, is a bi-directional, permanent magnet, DC motor. Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor 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: C0381 GMC indicates Range Actuator System Performance High Temperature.
Common causes: Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor 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 234

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 Jul 05, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0381 GMC Description

The Transfer Case Motor, also known as the transfer case range actuator, is a bi-directional, permanent magnet, DC motor. When energized, through the transfer case clockwise circuit or transfer case counterclockwise circuit, the ground is provided by the opposing motor control circuit which becomes grounded through the transfer case control module ground circuit. The transfer case range actuator, through a series of gears, rotates the transfer case control actuator shaft which moves the transfer case two/four-wheel drive actuator cam and transfer case high/low shift fork in order to shift the transfer case between the following modes or ranges: 2WD, 4WD/AWD Automatic, 4WD High/Locked, 4WD Low and Neutral.

OBDII Code C0381 GMC - Range Actuator System Performance High Temperature - AutoCodes.com — C0381 GMC Code - Range Actuator System Performance High Temperature

What does this mean?

What are the Possible Causes of the DTC C0381 GMC?

Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator)
Transfer Case Motor harness is open or shorted
Transfer Case Motor circuit poor electrical connection
Faulty Transfer Case Control Module

How to Fix the DTC C0381 GMC?

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 C0381 GMC 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 C0381 GMC code?

Need more information on how to fix the C0381 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0381 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

C0381 2014 GMC Sierra — Range Actuator System Performance High Temperature
C0381 2015 GMC Sierra — Range Actuator System Performance High Temperature
C0381 2016 GMC Sierra — Range Actuator System Performance High Temperature
C0381 2017 GMC Sierra — Range Actuator System Performance High Temperature
C0381 2018 GMC Sierra — Range Actuator System Performance High Temperature

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 C0381 GMC Code

1. What does OBDII code C0381 mean on a GMC vehicle?

C0381 indicates a problem with the range actuator system's performance, often caused by high temperature or excessive heat affecting the actuator's operation.

2. What are the common symptoms of code C0381 in GMC vehicles?

Symptoms may include difficulty shifting between drive modes (2WD, 4WD, etc.), warning lights on the dashboard (like the Service 4WD light), or unusual noises from the transfer case.

3. What causes the C0381 code to appear on a GMC?

The code is typically caused by overheating of the transfer case range actuator, electrical issues in the actuator wiring, or mechanical failure within the transfer case.

4. Can driving with code C0381 cause further damage?

Yes, continued driving with this code may lead to further damage to the transfer case or actuator, potentially resulting in more expensive repairs.

5. How is the C0381 code diagnosed in a GMC?

Diagnosis involves scanning for OBDII codes, inspecting the range actuator and wiring for damage, and checking the transfer case fluid level and condition.

6. How can I fix code C0381 on my GMC vehicle?

Repairs may include replacing the range actuator, repairing damaged wiring, addressing overheating issues, or servicing the transfer case fluid.

7. Can low transfer case fluid cause C0381 to trigger?

Yes, insufficient or degraded transfer case fluid can cause overheating and poor actuator performance, leading to this code.

8. Is replacing the range actuator the only solution for C0381?

Not always. While it may be necessary, the issue could also stem from wiring problems, improper fluid levels, or a faulty transfer case component.

9. How much does it cost to fix code C0381 on a GMC?

Repair costs vary but may range from $200 to $800 or more, depending on whether the actuator or other components need replacement.

10. Can I clear the C0381 code without fixing the issue?

Clearing the code without addressing the root cause may only provide a temporary solution, as the code is likely to return until the underlying problem is resolved.