AutoCodes – Chevrolet – C0306 2018 Chevrolet Silverado

C0306 2018 Chevrolet Silverado Code - Range Actuator Control Circuit

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: C0306 2018 Chevrolet Silverado indicates Range Actuator Control Circuit.
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 317

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 C0306 2018 Chevrolet Silverado 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 C0306 2018 Chevrolet Silverado - Range Actuator Control Circuit - AutoCodes.com — C0306 2018 Chevrolet Silverado Code - Range Actuator Control Circuit

What does this mean?

What are the Possible Causes of the DTC C0306 2018 Chevrolet Silverado?

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 C0306 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 C0306 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.

Need more information about the C0306 2018 Chevrolet Silverado code?

Need more information on how to fix the C0306 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0306 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 C0306 2018 Chevrolet Silverado Code

1. What does OBDII code C0306 mean for a 2018 Chevrolet Silverado?

The code C0306 indicates a Range Actuator Control Circuit issue in the vehicle's transmission system.

2. What are common symptoms of OBDII code C0306 on a 2018 Chevrolet Silverado?

Common symptoms include erratic shifting, difficulty changing gears, and the transmission getting stuck in a specific gear.

3. What are some possible causes of OBDII code C0306 on a 2018 Chevrolet Silverado?

Potential causes of this code include faulty range actuator control solenoid, damaged wiring or connectors, low transmission fluid levels, or a malfunctioning transmission control module.

4. How can I diagnose the OBDII code C0306 on my 2018 Chevrolet Silverado?

Diagnosing this code typically involves using a scan tool to retrieve the specific error codes, inspecting the transmission wiring and connectors, checking the transmission fluid level, and testing the range actuator control solenoid.

5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code C0306?

It is not recommended to continue driving with this code as it can lead to further transmission issues and potentially cause damage to the vehicle.

6. How can I repair OBDII code C0306 on a 2018 Chevrolet Silverado?

Repairing this code may involve replacing the range actuator control solenoid, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, or reprogramming the transmission control module.

7. Is it possible to reset OBDII code C0306 on a 2018 Chevrolet Silverado without fixing the underlying issue?

Resetting the code without addressing the root cause will only temporarily clear the error code, and the issue is likely to reoccur.

8. How much does it typically cost to repair OBDII code C0306 on a 2018 Chevrolet Silverado?

The cost of repairing this code can vary depending on the exact cause of the issue, but it may range from a few hundred dollars to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast fix OBDII code C0306 on a 2018 Chevrolet Silverado?

While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing this code often requires specialized tools and expertise, so it is recommended to consult a professional mechanic.

10. How often does OBDII code C0306 occur in a 2018 Chevrolet Silverado?

The occurrence of this code can vary depending on driving conditions, maintenance history, and other factors, but it is not a very common code in the 2018 Chevrolet Silverado.