C0306 GMC 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 GMC 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.
Code C0306 GMC Description
What are the Possible Causes of the DTC C0306 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 C0306 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 C0306 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 C0306 GMC code?
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Need Help with the Code?
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Information for Specific GMC Models
- C0306 2014 GMC Sierra — Range Actuator Control Circuit
- C0306 2015 GMC Sierra — Range Actuator Control Circuit
- C0306 2016 GMC Sierra — Range Actuator Control Circuit
- C0306 2017 GMC Sierra — Range Actuator Control Circuit
- C0306 2018 GMC Sierra — Range Actuator Control Circuit
Frequently Asked Questions about C0306 GMC Code
1. What are the common symptoms of OBDII code C0306 in a GMC vehicle?
Common symptoms include poor acceleration, rough shifting, and potential stalling of the engine.
2. What does the Range Actuator Control Circuit refer to in relation to code C0306 GMC?
The Range Actuator Control Circuit is a component in the transmission system responsible for controlling gear range selection.
3. What are the possible causes of OBDII code C0306 in a GMC vehicle?
Possible causes include a faulty range actuator control circuit, damaged wiring or connectors, or a malfunctioning transmission control module.
4. How can I diagnose the cause of OBDII code C0306 in my GMC vehicle?
Diagnosis typically involves a thorough inspection of the range actuator control circuit, checking for any damaged components, and using a diagnostic scanner to pinpoint the exact issue.
5. Can I drive my GMC vehicle with OBDII code C0306 present?
It is not recommended to drive your vehicle with this code present, as it can lead to further damage to the transmission system and potentially unsafe driving conditions.
6. Is it possible to repair OBDII code C0306 in a GMC vehicle without professional help?
While some minor repairs may be possible for experienced DIYers, it is recommended to seek professional help to properly diagnose and repair this code to prevent further complications.
7. How much does it typically cost to repair OBDII code C0306 in a GMC vehicle?
The cost of repairs can vary depending on the extent of the damage and the specific cause of the code, but it is advisable to budget for potentially significant repair costs.
8. Are there any preventive maintenance tips to avoid OBDII code C0306 in a GMC vehicle?
Regularly servicing your transmission system and addressing any warning signs or unusual symptoms promptly can help prevent issues that may trigger this code.
9. Can clearing the OBDII code C0306 in a GMC vehicle resolve the issue temporarily?
Clearing the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear once the problem persists.
10. How urgent is it to address OBDII code C0306 in a GMC vehicle?
It is important to address this code promptly to prevent further damage to the transmission system and ensure the safe operation of your vehicle.
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