P0672 2017 GMC Sierra Code - Cylinder 2 Glow Plug Circuit Fault
Quick Answer
The diagnostic trouble code P0672 for a 2017 GMC Sierra indicates a fault in the glow plug circuit of cylinder 2. Common causes include Faulty glow plug in cylinder 2, Wiring issues or a poor electrical connection in the glow plug circuit, Corrosion or damage to the glow plug circuit components. 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
- P0672 2017 GMC Sierra indicates Cylinder 2 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty glow plug in cylinder 2, Wiring issues or a poor electrical connection in the glow plug circuit, Corrosion or damage to the glow plug circuit components.
- 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 P0672 2017 GMC Sierra Description
The diagnostic trouble code P0672 for a 2017 GMC Sierra indicates a fault in the glow plug circuit of cylinder 2. Glow plugs are crucial components in diesel engines that help with cold starts by heating the air/fuel mixture in the combustion chamber. When the engine is cold, the glow plugs heat up to aid in the ignition process. If there is an issue with the glow plug circuit of cylinder 2, it can lead to difficulties in starting the engine, decreased performance, increased fuel consumption, and potential engine misfires.
Common Causes of P0672 2017 GMC Sierra
- Faulty glow plug in cylinder 2.
- Wiring issues or a poor electrical connection in the glow plug circuit.
- Corrosion or damage to the glow plug circuit components.
- Issues with the glow plug relay.
- Engine control module (ECM) failure or malfunction.
Symptoms of P0672 2017 GMC Sierra
- Hard starting or difficulty starting the engine, especially in cold weather.
- Rough idling or engine misfires.
- Decreased engine performance and power.
- Increased fuel consumption.
- Check Engine Light illuminated on the dashboard.
How to Fix P0672 2017 GMC Sierra
- Diagnose the specific cause of the glow plug circuit fault using a diagnostic scanner and multimeter.
- Inspect the glow plug in cylinder 2 for damage or malfunction and replace if necessary.
- Check the wiring harness and connections in the glow plug circuit for any signs of damage or corrosion. Repair or replace as needed.
- Test the glow plug relay for proper functioning and replace if faulty.
- Clear the error code from the ECM and test the vehicle to ensure the issue has been resolved.
Cost to Fix P0672 2017 GMC Sierra
The typical repair costs for addressing a cylinder 2 glow plug circuit fault can range from $150 to $300, including parts and labor. However, prices can vary depending on the location, the specific make and model of the vehicle, and the rates of the auto repair shop. It is recommended to inquire about the diagnosis time and labor rates at local shops to get a more accurate estimate.
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