P067C GMC Code - Cylinder 5 Glow Plug Control Circuit Low Voltage
Quick Answer
The P067C GMC code indicates a problem with the Cylinder 5 Glow Plug Control Circuit, specifically a low voltage issue. Common causes include Faulty glow plug in Cylinder 5, Damaged wiring harness or connectors, 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 GMC indicates Cylinder 5 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug in Cylinder 5, Damaged wiring harness or connectors, 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 GMC Description
The P067C GMC code indicates a problem with the Cylinder 5 Glow Plug Control Circuit, specifically a low voltage issue. Glow plugs are essential components in a diesel engine that help with cold starts by heating the air in the combustion chamber. When the engine is cold, the glow plugs warm up to ensure proper combustion of the fuel. In the case of Cylinder 5, it means that the glow plug in the fifth cylinder is not receiving sufficient voltage to function properly.
Common Causes of P067C GMC
- Faulty glow plug in Cylinder 5
- Damaged wiring harness or connectors
- Malfunctioning glow plug control module
- Poor electrical connection
- Corrosion or build-up on the glow plug or connectors
Symptoms of P067C GMC
- Difficulties starting the engine, especially in cold weather
- Rough idling or misfiring
- Reduced power and acceleration
- Increased fuel consumption
- Illumination of the Check Engine Light
How to Fix P067C GMC
- Diagnose the specific cause of the low voltage issue by using a multimeter to test the glow plug, wiring, and control module.
- Replace the faulty glow plug in Cylinder 5 if necessary.
- Inspect and repair any damaged wiring harness or connectors.
- Test and, if needed, replace the glow plug control module.
- Clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.
Cost to Fix P067C GMC
The typical repair costs for addressing a Cylinder 5 Glow Plug Control Circuit Low Voltage issue can range from $150 to $500, depending on the specific cause of the problem and the cost of parts and labor. It is important to factor in the diagnostic time and labor rates at auto repair shops, which can vary based on location, vehicle make and model, and engine type. Rates may range from $80 to $150 per hour, with higher rates in metropolitan areas or at dealerships, and lower rates at independent shops. It is advisable to obtain quotes from local shops for a more accurate cost estimate.
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Information for Specific GMC Models
- P067C 2014 GMC Sierra — Cylinder 5 Glow Plug Control Circuit Low Voltage
- P067C 2015 GMC Sierra — Cylinder 5 Glow Plug Control Circuit Low Voltage
- P067C 2016 GMC Sierra — Cylinder 5 Glow Plug Control Circuit Low Voltage
- P067C 2017 GMC Sierra — Cylinder 5 Glow Plug Control Circuit Low Voltage
- P067C 2018 GMC Sierra — Cylinder 5 Glow Plug Control Circuit Low Voltage
Frequently Asked Questions about P067C GMC Code
1. What does the OBDII code P067C mean on a GMC vehicle?
P067C indicates a low voltage issue in the glow plug control circuit for cylinder 5, which is responsible for heating the glow plug during cold starts.
2. What are the symptoms of the P067C code on a GMC?
Common symptoms include difficulty starting the engine in cold weather, reduced engine performance, and an illuminated check engine light.
3. What causes the P067C code to appear on a GMC?
Causes may include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a failing glow plug control module, or a weak vehicle battery.
4. Can I drive my GMC with the P067C code?
It’s possible to drive, but prolonged operation may lead to hard starts, especially in cold weather, and could cause further damage to the engine or electrical system.
5. How can I diagnose the P067C code on my GMC?
Diagnose by visually inspecting the wiring and connectors for cylinder 5, testing the glow plug with a multimeter, and checking the glow plug control module for proper operation.
6. How do I fix the P067C code on a GMC?
Repairs may involve replacing the faulty glow plug, repairing damaged wiring, cleaning or tightening connectors, or replacing the glow plug control module if necessary.
7. How much does it cost to fix the P067C code on a GMC?
Repair costs can range from $50 to $200 for a glow plug replacement, while more extensive repairs like fixing wiring or replacing the control module may cost $300 or more.
8. Can a weak battery cause the P067C code?
Yes, a weak or failing battery can lead to insufficient voltage to the glow plug circuit, triggering the P067C code.
9. How can I prevent the P067C code from recurring on my GMC?
Regularly inspect and maintain the glow plug system, ensure wiring and connectors are in good condition, and keep the battery fully charged and in good health.
10. Is the P067C code specific to GMC vehicles?
No, while P067C is commonly seen on GMC vehicles with diesel engines, it can appear on other makes and models with similar systems.
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