P067A 2015 GMC Sierra Code - Cylinder 4 Glow Plug Control Circuit Low Voltage
Quick Answer
The P067A diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the glow plug control circuit in cylinder 4, specifically a low voltage issue. Common causes include Faulty glow plug control module, Corroded or damaged wiring harness, Loose or disconnected 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
- P067A 2015 GMC Sierra indicates Cylinder 4 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug control module, Corroded or damaged wiring harness, Loose or disconnected 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 P067A 2015 GMC Sierra Description
The P067A diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the glow plug control circuit in cylinder 4, specifically a low voltage issue. Glow plugs are essential components in diesel engines that help warm up the combustion chamber for easier starting, especially in cold weather conditions. When this code triggers, it means that the vehicle's onboard computer has detected a voltage below the specified threshold in the control circuit responsible for activating the glow plug in cylinder 4.
Common Causes of P067A 2015 GMC Sierra
- Faulty glow plug control module.
- Corroded or damaged wiring harness.
- Loose or disconnected connectors in the glow plug circuit.
- Defective glow plug in cylinder 4.
- Electrical issues such as a blown fuse or relay in the circuit.
Symptoms of P067A 2015 GMC Sierra
- Difficulty starting the engine, especially in cold weather.
- Rough idling or a noticeable decrease in engine performance.
- Illumination of the check engine light on the dashboard.
- Increased emissions or a decrease in fuel efficiency.
- Engine misfires or hesitation during acceleration.
How to Fix P067A 2015 GMC Sierra
- Begin by diagnosing the specific cause of the low voltage condition, using a digital multimeter to test the voltage in the glow plug circuit.
- Inspect the glow plug control module, wiring harness, and connectors for any signs of damage, corrosion, or loose connections.
- Test the resistance of the glow plug in cylinder 4 to determine if it is functioning correctly.
- Replace any faulty components, such as the glow plug control module, wiring harness, connectors, or the glow plug itself.
- Clear the DTC from the vehicle's computer memory and test the vehicle to ensure that the issue has been resolved.
Cost to Fix P067A 2015 GMC Sierra
The typical repair costs for addressing a P067A code in a 2015 GMC Sierra can vary depending on the specific cause of the issue and the required parts and labor. On average, the parts for this repair, including a new glow plug control module, wiring harness, and glow plug, can range from $200 to $500. Labor costs at auto repair shops can vary between $80 and $150 per hour, with the total repair bill likely falling between $300 and $800. However, it's essential to note that these estimates are general guidelines, and actual costs may differ based on the location, vehicle make and model, and specific diagnosis and repair processes required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.
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