Engine-CodesGMC – P0675 2017 GMC Sierra

P0675 2017 GMC Sierra Code - Cylinder 5 Glow Plug Circuit Fault

Quick Answer

The diagnostic trouble code P0675 for a 2017 GMC Sierra indicates a fault in the cylinder 5 glow plug circuit. Common causes include Faulty glow plug in cylinder 5, Wiring issues in the glow plug circuit, Defective glow plug 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
P0675 2017 GMC Sierra indicates Cylinder 5 Glow Plug Circuit Fault.
Common causes
Common causes include Faulty glow plug in cylinder 5, Wiring issues in the glow plug circuit, Defective glow plug 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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0675 2017 GMC Sierra Description

The diagnostic trouble code P0675 for a 2017 GMC Sierra indicates a fault in the cylinder 5 glow plug circuit. Glow plugs are essential components in diesel engines that aid in starting the engine by heating the combustion chamber before ignition. In this case, the code specifically points to an issue with the glow plug in cylinder 5. When the glow plug circuit malfunctions, it can lead to difficulties in starting the engine, reduced engine performance, increased emissions, and potential damage to other engine components.

OBDII Code P0675 2017 GMC Sierra - Cylinder 5 Glow Plug Circuit Fault
P0675 2017 GMC Sierra Code - Cylinder 5 Glow Plug Circuit Fault

Common Causes of P0675 2017 GMC Sierra

  1. Faulty glow plug in cylinder 5.
  2. Wiring issues in the glow plug circuit.
  3. Defective glow plug control module.
  4. Malfunctioning engine control module.
  5. Corrosion or poor connections in the glow plug circuit.

Symptoms of P0675 2017 GMC Sierra

  1. Difficulty starting the engine, especially in cold weather.
  2. Rough idling or engine misfires.
  3. Decreased fuel efficiency.
  4. Engine stalling.
  5. Illumination of the check engine light.

How to Fix P0675 2017 GMC Sierra

  1. Diagnose the specific issue by using a scan tool to identify the cylinder 5 glow plug circuit fault.
  2. Inspect the wiring and connections in the glow plug circuit for any damage or corrosion.
  3. Test the glow plug in cylinder 5 to determine if it is functioning properly.
  4. Replace the faulty glow plug or glow plug control module as needed.
  5. Clear the diagnostic trouble code and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0675 2017 GMC Sierra

The typical repair costs for addressing a cylinder 5 glow plug circuit fault in a 2017 GMC Sierra can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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