P067C 2017 GMC Sierra Code - Cylinder 5 Glow Plug Control Circuit Low Voltage
Quick Answer
The OBD-II trouble code P067C for a 2017 GMC Sierra indicates an issue with the cylinder 5 glow plug control circuit experiencing low voltage. Common causes include Faulty glow plug in cylinder 5, Wiring issues such as a short or open circuit, Malfunctioning glow plug control module. 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
- P067C 2017 GMC Sierra indicates Cylinder 5 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug in cylinder 5, Wiring issues such as a short or open circuit, Malfunctioning glow plug control module.
- 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 P067C 2017 GMC Sierra Description
The OBD-II trouble code P067C for a 2017 GMC Sierra indicates an issue with the cylinder 5 glow plug control circuit experiencing low voltage. Glow plugs are essential components in diesel engines that help with cold starts by heating the air in the combustion chamber. When the engine is cold, the glow plug control module sends voltage to the glow plugs to warm them up before starting the engine. However, if the control circuit is experiencing low voltage, it can lead to difficulties in starting the engine, reduced fuel efficiency, and potential long-term damage to the engine.
Common Causes of P067C 2017 GMC Sierra
- Faulty glow plug in cylinder 5.
- Wiring issues such as a short or open circuit.
- Malfunctioning glow plug control module.
- Electrical system problems in the vehicle.
- Corrosion or loose connections in the glow plug circuit.
Symptoms of P067C 2017 GMC Sierra
- Difficulty starting the engine, especially in cold weather.
- Rough idling or misfiring of the engine.
- Reduced fuel efficiency.
- Illumination of the check engine light on the dashboard.
- Increased emissions from the vehicle.
How to Fix P067C 2017 GMC Sierra
- Begin by diagnosing the specific cause of the low voltage in the cylinder 5 glow plug control circuit using a diagnostic scanner.
- Inspect the glow plug in cylinder 5 to determine if it is functioning properly. Replace the glow plug if it is faulty.
- Check the wiring and connections in the glow plug control circuit for any damage, corrosion, or loose connections. Repair or replace any damaged components.
- Test the glow plug control module to ensure it is sending the correct voltage to the glow plug. Replace the control module if necessary.
- Clear the trouble code from the vehicle's computer and test the vehicle to ensure that the issue has been resolved.
Cost to Fix P067C 2017 GMC Sierra
The typical repair costs for addressing the P067C trouble code in a 2017 GMC Sierra can vary depending on the root cause of the issue. The cost of a new glow plug can range from $15 to $50, while a glow plug control module can cost between $50 and $150. Labor costs for this repair can range from $100 to $300, depending on the shop's hourly rate and the complexity of the repair. It's advisable to contact local auto repair shops for a more accurate estimate based on your specific vehicle and location.
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