Engine-CodesGMC – P0358 2014 GMC Sierra

P0358 2014 GMC Sierra Code - Ignition Coil 8 Control Circuit

Quick Answer

The P0358 code for a 2014 GMC Sierra indicates a problem with the Ignition Coil 8 Control Circuit. Common causes include Faulty ignition coil, Wiring or connector issues, Corrosion or damage to electrical 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
P0358 2014 GMC Sierra indicates Ignition Coil 8 Control Circuit.
Common causes
Common causes include Faulty ignition coil, Wiring or connector issues, Corrosion or damage to electrical 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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0358 2014 GMC Sierra Description

The P0358 code for a 2014 GMC Sierra indicates a problem with the Ignition Coil 8 Control Circuit. In modern vehicles, the ignition system is responsible for generating the spark that ignites the air-fuel mixture in the engine cylinders, allowing the vehicle to run. Ignition coils play a crucial role in this process by converting the low voltage from the battery into the high voltage needed to create a spark. The control circuit refers to the electrical system that regulates the ignition coil's operation.

OBDII Code P0358 2014 GMC Sierra - Ignition Coil 8 Control Circuit
P0358 2014 GMC Sierra Code - Ignition Coil 8 Control Circuit

Common Causes of P0358 2014 GMC Sierra

  1. Faulty ignition coil
  2. Wiring or connector issues
  3. Corrosion or damage to electrical components
  4. Poor connection or loose wiring
  5. Engine overheating

Symptoms of P0358 2014 GMC Sierra

  1. Engine misfires
  2. Rough idling or stalling
  3. Decreased fuel efficiency
  4. Check Engine Light illuminated
  5. Loss of power or acceleration

How to Fix P0358 2014 GMC Sierra

  1. Use a diagnostic scanner to confirm the P0358 code and identify the specific ignition coil 8.
  2. Inspect the wiring, connectors, and ignition coil for any signs of damage or corrosion.
  3. Replace the faulty ignition coil if needed, ensuring proper installation and secure connections.
  4. Clear the trouble codes and test drive the vehicle to confirm that the issue has been resolved.
  5. Perform a final check to ensure the ignition coil 8 control circuit is functioning correctly.

Cost to Fix P0358 2014 GMC Sierra

The typical repair costs for addressing a P0358 code in a 2014 GMC Sierra can vary depending on the specific issue and the labor rates in your area. On average, replacing an ignition coil can range from $100 to $300, with additional costs for diagnostic time and labor. It's advisable to consult with a trusted mechanic or auto repair shop to get a more accurate estimate based on your vehicle's needs. Remember that rates can vary based on location, vehicle make and model, and other factors.

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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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