P067D 2018 GMC Sierra Code - Cylinder 5 Glow Plug Control Circuit High Voltage
Quick Answer
The P067D diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Glow Plug Control Circuit in cylinder 5, specifically detecting high voltage. Common causes include Faulty glow plug in cylinder 5, Malfunctioning glow plug control module, Damaged wiring or connectors in the glow plug circuit. 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
- P067D 2018 GMC Sierra indicates Cylinder 5 Glow Plug Control Circuit High Voltage.
- Common causes
- Common causes include Faulty glow plug in cylinder 5, Malfunctioning glow plug control module, Damaged wiring or connectors in the glow plug circuit.
- 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 P067D 2018 GMC Sierra Description
The P067D diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Glow Plug Control Circuit in cylinder 5, specifically detecting high voltage. Glow plugs are essential components in diesel engines and are used to heat the combustion chamber for easier cold starts. The glow plug control module manages the operation of the glow plugs, ensuring they heat up properly before ignition.
Common Causes of P067D 2018 GMC Sierra
- Faulty glow plug in cylinder 5
- Malfunctioning glow plug control module
- Damaged wiring or connectors in the glow plug circuit
- Issues with the power supply to the glow plug
- Corrosion or debris affecting the glow plug operation
Symptoms of P067D 2018 GMC Sierra
- Difficulty starting the engine, especially in cold weather
- Rough idling or misfires
- Decreased fuel efficiency
- Illumination of the check engine light
- Increased emissions
How to Fix P067D 2018 GMC Sierra
- Begin by diagnosing the specific cause of the high voltage in the glow plug control circuit for cylinder 5 using a diagnostic scanner.
- Test the glow plug in cylinder 5 to determine if it is functioning correctly.
- Inspect the glow plug control module and wiring for any damage or corrosion.
- Replace the faulty glow plug, control module, or repair any damaged wiring or connectors as necessary.
- Clear the DTC and test the vehicle to ensure that the issue has been resolved.
Cost to Fix P067D 2018 GMC Sierra
The typical repair costs for addressing a P067D code in a 2018 GMC Sierra can vary depending on the specific cause of the issue and the parts and labor required for the repair. On average, repairing a glow plug control circuit problem can range from $200 to $500, including parts and labor. However, it is essential to consider that diagnostic time and labor rates can vary between auto repair shops, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also influence the final cost. For a more precise estimate, it is recommended to consult with local auto repair shops.
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