C0306 2017 GMC Sierra Code - Range Actuator Control Circuit
Quick Answer
The C0306 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to an issue with the Range Actuator Control Circuit. Common causes include Faulty range actuator, Damaged wiring or connectors in the control circuit, Malfunctioning sensors related to the range actuator. 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 2017 GMC Sierra indicates Range Actuator Control Circuit.
- Common causes
- Common causes include Faulty range actuator, Damaged wiring or connectors in the control circuit, Malfunctioning sensors related to the range actuator.
- 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 C0306 2017 GMC Sierra Description
The C0306 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to an issue with the Range Actuator Control Circuit. This code indicates that there is a malfunction in the circuit responsible for controlling the range actuator, which is a component that plays a crucial role in the operation of the vehicle's transmission system. The range actuator is responsible for selecting the appropriate gear range based on the driver's input and the vehicle's operating conditions.
Common Causes of C0306 2017 GMC Sierra
- Faulty range actuator
- Damaged wiring or connectors in the control circuit
- Malfunctioning sensors related to the range actuator
- Issues with the engine control module (ECM)
- Electrical problems such as a blown fuse or relay
Symptoms of C0306 2017 GMC Sierra
- Erratic or harsh shifting
- Difficulty getting into gear
- Poor acceleration
- Reduced fuel efficiency
- Transmission failure
How to Fix C0306 2017 GMC Sierra
- Begin by conducting a thorough inspection of the range actuator control circuit, including the sensors, wiring, and connectors.
- Test the range actuator and related components to identify any faulty parts that need to be replaced.
- Repair or replace any damaged wiring or connectors in the circuit.
- Reset the ECM and clear the DTC to see if the issue persists.
- Test drive the vehicle to ensure that the transmission is shifting smoothly and accurately after the repair.
Cost to Fix C0306 2017 GMC Sierra
The cost of repairing a Range Actuator Control Circuit issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the cost of parts for this repair can range from $200 to $500, while labor costs can range from $150 to $300. Overall, the total repair cost for this issue may fall between $350 and $800. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the specific diagnosis and repair process required. It's recommended to consult with a trusted auto repair shop for a more accurate cost estimate.
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Frequently Asked Questions about C0306 2017 GMC Sierra Code
1. What does the OBDII code C0306 mean on a 2017 GMC Sierra?
C0306 indicates a problem with the Range Actuator Control Circuit, which is part of the transfer case system responsible for controlling drive modes like 4WD or AWD.
2. What are the symptoms of the C0306 code on a GMC Sierra?
Common symptoms include the “Service 4WD†message on the dashboard, inability to switch between drive modes, or unusual noises from the transfer case.
3. What causes the C0306 code to appear?
The code is typically triggered by a faulty range actuator motor, damaged wiring or connectors in the control circuit, or a malfunctioning transfer case control module (TCCM).
4. How can I diagnose the C0306 code on my 2017 GMC Sierra?
Start by inspecting the wiring and connectors related to the range actuator motor for damage or corrosion. Use a scan tool to monitor the actuator’s operation and test the circuit for proper voltage.
5. Can I drive my 2017 GMC Sierra with the C0306 code?
Driving with this code is possible but not recommended, as it may limit drivability in certain conditions and could cause further damage to the transfer case system.
6. How is the C0306 code fixed?
Repairs may involve replacing the faulty range actuator motor, repairing or replacing damaged wiring or connectors, or reprogramming the transfer case control module if necessary.
7. How much does it cost to repair the C0306 code on a GMC Sierra?
Repair costs vary but can range from $200 to $800 depending on whether the issue is with the actuator motor, wiring, or control module.
8. Can a software issue cause the C0306 code?
Yes, outdated or corrupted software in the transfer case control module can occasionally cause this code and may require reprogramming or updating.
9. What tools are needed to troubleshoot the C0306 code?
You’ll need an OBDII scan tool, a multimeter to test the circuit, and potentially a service manual for wiring diagrams specific to the 2017 GMC Sierra.
10. Will clearing the code fix the C0306 issue?
Clearing the code may temporarily remove it, but unless the underlying problem is resolved, the code will likely return.
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