P0672 2015 GMC Sierra Code - Cylinder 2 Glow Plug Circuit Fault
Quick Answer
The diagnostic trouble code P0672 for a 2015 GMC Sierra indicates a fault in the cylinder 2 glow plug circuit. Common causes include Faulty glow plug in cylinder 2, Damaged or corroded wiring connecting the glow plug to the engine control module, Issues with the engine 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
- P0672 2015 GMC Sierra indicates Cylinder 2 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty glow plug in cylinder 2, Damaged or corroded wiring connecting the glow plug to the engine control module, Issues with the engine 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 P0672 2015 GMC Sierra Description
The diagnostic trouble code P0672 for a 2015 GMC Sierra indicates a fault in the cylinder 2 glow plug circuit. Glow plugs are essential components in diesel engines that help with cold starts by heating the air in the combustion chamber. When the engine is cold, the glow plugs heat up to ensure proper ignition of the fuel. In this case, a fault in the cylinder 2 glow plug circuit means that there is an issue with the electrical system responsible for powering the glow plug in cylinder 2.
Common Causes of P0672 2015 GMC Sierra
- Faulty glow plug in cylinder 2.
- Damaged or corroded wiring connecting the glow plug to the engine control module.
- Issues with the engine control module.
- Poor electrical connections.
- Environmental factors, such as extreme cold weather conditions.
Symptoms of P0672 2015 GMC Sierra
- Difficulty starting the engine, especially in cold weather.
- Rough idling or engine misfires.
- Decreased fuel efficiency.
- Increased emissions.
- Engine performance issues, such as lack of power or acceleration.
How to Fix P0672 2015 GMC Sierra
- Begin by diagnosing the specific cause of the fault using a diagnostic scanner to pinpoint the issue with the cylinder 2 glow plug circuit.
- Inspect the glow plug in cylinder 2 to determine if it is functioning correctly. Replace the glow plug if necessary.
- Check the wiring connecting the glow plug to the engine control module for any damage or corrosion. Repair or replace any faulty wiring.
- Test the engine control module to ensure it is sending the proper signals to the glow plug. Replace the engine control module if it is faulty.
- Clear the diagnostic trouble code from the vehicle's system and test the engine to ensure that the issue has been resolved.
Cost to Fix P0672 2015 GMC Sierra
The typical repair costs for addressing a cylinder 2 glow plug circuit fault in a 2015 GMC Sierra can range from $200 to $500, including parts and labor. It's important to note that 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. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate.
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