AutoCodes – Chevrolet – C0306 2015 Chevrolet Silverado

C0306 2015 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 2015 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 412

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 2015 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 2015 Chevrolet Silverado - Range Actuator Control Circuit - AutoCodes.com — C0306 2015 Chevrolet Silverado Code - Range Actuator Control Circuit

What does this mean?

What are the Possible Causes of the DTC C0306 2015 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 2015 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 2015 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 2015 Chevrolet Silverado code?

Need more information on how to fix the C0306 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the 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 C0306 2015 Chevrolet Silverado Code

What does the OBDII code C0306 mean for a 2015 Chevrolet Silverado?

C0306 refers to a malfunction in the Range Actuator Control Circuit, which controls the operation of the range actuator in the vehicle's transmission system.

What are common symptoms of the C0306 code?

Common symptoms include transmission issues like erratic shifting, inability to shift gears, warning lights on the dashboard, and unusual noises from the transmission.

What could cause the C0306 code to trigger?

Possible causes include a faulty range actuator, damaged wiring or connectors in the control circuit, a malfunctioning transmission control module (TCM), or low transmission fluid levels.

How can I diagnose the C0306 code?

To diagnose the C0306 code, use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, check the range actuator for proper operation, and ensure the transmission fluid is at the correct level.

What repairs are typically needed for the C0306 code?

Repairs may include replacing a faulty range actuator, repairing or replacing damaged wiring or connectors, or diagnosing and possibly replacing the transmission control module if it's found to be faulty.

Can I drive my Silverado with the C0306 code?

While you may be able to drive the vehicle, itâ€™s not recommended as it can lead to further transmission damage or safety issues due to erratic gear shifting.

How can I reset the C0306 code after repairs?

After completing the necessary repairs, you can reset the code by using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes, then reconnecting it.

Is the C0306 code a serious issue?

Yes, the C0306 code indicates a problem with the transmission system that can lead to significant performance issues, so it should be addressed promptly.

What is the cost to repair the C0306 code?

Repair costs can vary widely, but typically range from $100 to $1,000 depending on whether it requires simple wiring repairs or a more extensive part replacement like the range actuator or TCM.

Should I seek professional help for the C0306 code?

If you are not experienced with automotive repairs, it is advisable to seek professional help to accurately diagnose and repair the issue associated with the C0306 code.