Engine-CodesGMC – P0355 2015 GMC Sierra

P0355 2015 GMC Sierra Code - Ignition Coil 5 Control Circuit

Quick Answer

The P0355 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates an issue with the ignition coil 5 control circuit. Common causes include Faulty ignition coil, Wiring issues in the ignition coil control circuit, Damaged ignition coil connector. 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
P0355 2015 GMC Sierra indicates Ignition Coil 5 Control Circuit.
Common causes
Common causes include Faulty ignition coil, Wiring issues in the ignition coil control circuit, Damaged ignition coil connector.
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 P0355 2015 GMC Sierra Description

The P0355 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates an issue with the ignition coil 5 control circuit. The ignition coil is a vital component of the vehicle's ignition system responsible for converting the low voltage from the battery into the high voltage needed to ignite the fuel-air mixture in the engine cylinders. In this case, the control circuit for ignition coil 5 is not functioning correctly, which can lead to a misfire in that specific cylinder.

OBDII Code P0355 2015 GMC Sierra - Ignition Coil 5 Control Circuit
P0355 2015 GMC Sierra Code - Ignition Coil 5 Control Circuit

Common Causes of P0355 2015 GMC Sierra

  1. Faulty ignition coil
  2. Wiring issues in the ignition coil control circuit
  3. Damaged ignition coil connector
  4. ECM malfunction
  5. Poor electrical connection

Symptoms of P0355 2015 GMC Sierra

  1. Rough idling or engine misfires
  2. Loss of power during acceleration
  3. Illumination of the check engine light
  4. Increased fuel consumption
  5. Engine stalling or hesitation

How to Fix P0355 2015 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a scan tool to check for any additional trouble codes and performing a visual inspection of the ignition coil and related components.
  2. Test the ignition coil 5 for proper function using a multimeter to measure resistance and ensure it is within the manufacturer's specifications.
  3. Inspect the wiring and connections in the ignition coil control circuit for any damage or corrosion, repairing or replacing as necessary.
  4. Check the ignition coil connector for any signs of damage or poor connection, replacing if needed.
  5. If the issue persists, consider testing the ECM for faults or consulting a professional mechanic for further diagnosis and repair.

Cost to Fix P0355 2015 GMC Sierra

The cost of repairing the ignition coil 5 control circuit on a 2015 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your location. On average, the cost of replacing an ignition coil can range from $100 to $300, with additional costs for labor and diagnostic fees. Overall, the total repair cost for this issue may range from $150 to $500, but it's recommended to obtain quotes from local auto repair shops for a more accurate estimate. Keep in mind that labor rates can fluctuate based on the shop's location, reputation, and expertise.

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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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