P0672 2016 GMC Sierra Code - Cylinder 2 Glow Plug Circuit Fault
Quick Answer
The diagnostic trouble code P0672 for a 2016 GMC Sierra indicates a fault in the glow plug circuit of cylinder 2. Common causes include Faulty glow plug in cylinder 2, Wiring or connector issues in the glow plug circuit, Glow plug control module malfunction. 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 2016 GMC Sierra indicates Cylinder 2 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty glow plug in cylinder 2, Wiring or connector issues in the glow plug circuit, Glow plug control module malfunction.
- 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 2016 GMC Sierra Description
The diagnostic trouble code P0672 for a 2016 GMC Sierra indicates a fault in the glow plug circuit of cylinder 2. Glow plugs are essential components in diesel engines that help with cold starts by heating the combustion chamber before ignition. When the engine is cold, the glow plugs heat up to ensure proper combustion and smooth starting. In this case, a fault in the glow plug circuit of cylinder 2 means that there is an issue with the electrical system responsible for powering the glow plug in that specific cylinder.
Common Causes of P0672 2016 GMC Sierra
- Faulty glow plug in cylinder 2.
- Wiring or connector issues in the glow plug circuit.
- Glow plug control module malfunction.
- Corrosion or damage to electrical connections.
- Engine temperature sensor failure.
Symptoms of P0672 2016 GMC Sierra
- Difficulties starting the engine, especially in cold weather.
- Rough idling or misfires upon startup.
- Decreased engine performance and power.
- Check Engine Light illuminated on the dashboard.
- Increased fuel consumption.
How to Fix P0672 2016 GMC Sierra
- Diagnose the specific issue by using a scan tool to pinpoint the exact cause of the fault.
- Inspect the glow plug in cylinder 2 for proper function and replace if necessary.
- Check the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
- Test the glow plug control module for proper operation and replace if faulty.
- Clear the trouble code from the vehicle's computer and test the vehicle to ensure the issue is resolved.
Cost to Fix P0672 2016 GMC Sierra
The typical repair costs for addressing a cylinder 2 glow plug circuit fault in a 2016 GMC Sierra can range from $150 to $400, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is recommended to check with local auto repair shops for a more accurate estimate based on your specific circumstances. Keep in mind that rates may be higher at dealerships or metropolitan areas and lower at independent shops.
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