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Engine-Codes – GMC – P0355 2017 GMC Sierra

P0355 2017 GMC Sierra Code - Ignition Coil 5 Control Circuit

Quick Answer

The P0355 diagnostic trouble code (DTC) for a 2017 GMC Sierra specifically refers to an issue with the Ignition Coil 5 Control Circuit. Common causes include Faulty ignition coil for cylinder 5, Wiring or connector issues in the ignition coil circuit, ECM malfunction or software glitch. 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 2017 GMC Sierra indicates Ignition Coil 5 Control Circuit.
Common causes
Common causes include Faulty ignition coil for cylinder 5, Wiring or connector issues in the ignition coil circuit, ECM malfunction or software glitch.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0355 2017 GMC Sierra Description

The P0355 diagnostic trouble code (DTC) for a 2017 GMC Sierra specifically refers to an issue with the Ignition Coil 5 Control Circuit. This code indicates that there is a malfunction in the control circuit for the ignition coil assigned to cylinder 5 in the engine. The ignition coil is a crucial component of the ignition system, responsible for converting the low voltage from the battery into the high voltage needed to ignite the air-fuel mixture in the combustion chamber. When the control circuit for this ignition coil is not functioning properly, it can lead to misfires, poor engine performance, and potentially even engine damage.

OBDII Code P0355 2017 GMC Sierra - Ignition Coil 5 Control Circuit
P0355 2017 GMC Sierra Code - Ignition Coil 5 Control Circuit

Common Causes of P0355 2017 GMC Sierra

  1. Faulty ignition coil for cylinder 5
  2. Wiring or connector issues in the ignition coil circuit
  3. ECM malfunction or software glitch
  4. Spark plug issues affecting cylinder 5
  5. Other electrical issues affecting the ignition system

Symptoms of P0355 2017 GMC Sierra

  1. Rough idling or engine misfires
  2. Decreased fuel efficiency
  3. Engine stalling or hesitation during acceleration
  4. Illumination of the Check Engine Light
  5. Engine performance issues such as lack of power or rough running

How to Fix P0355 2017 GMC Sierra

  1. Begin by diagnosing the specific cause of the P0355 code, which may involve testing the ignition coil, checking the wiring and connectors, and inspecting the spark plug for cylinder 5.
  2. If the ignition coil is found to be faulty, it will need to be replaced with a new one. Ensure that the replacement coil is compatible with the make and model of the vehicle.
  3. Check the wiring and connectors in the ignition coil circuit for any damage or corrosion. Repair or replace any damaged components as needed.
  4. Inspect the spark plug for cylinder 5 and replace it if necessary. Properly gap the new spark plug before installation.
  5. Clear the DTC from the ECM using a diagnostic tool and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0355 2017 GMC Sierra

The typical repair costs for addressing a P0355 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of replacing an ignition coil can range from $100 to $300, including parts and labor. Additional costs may be incurred if wiring or connectors need to be repaired or replaced. It's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. For a more accurate estimate, it's recommended to check with local repair shops.

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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.

Frequently Asked Questions about P0355 2017 GMC Sierra Code

1. What does OBDII code P0355 for a 2017 GMC Sierra mean?

- OBDII code P0355 indicates a problem with the ignition coil 5 control circuit in the vehicle's engine.

2. What are the common symptoms of a P0355 error on a GMC Sierra?

- Common symptoms include engine misfires, rough idling, loss of power, and an illuminated check engine light.

3. What are the possible causes of the P0355 code in a 2017 GMC Sierra?

- Potential causes include a faulty ignition coil, damaged wiring or connectors, a blown fuse, or a problem with the Engine Control Module (ECM).

4. How can I diagnose the source of a P0355 error in my GMC Sierra?

- Diagnosing the issue may involve visually inspecting the ignition coil and related components, checking for loose connections, testing the coil's resistance, and using a scan tool to analyze sensor data.

5. Can I drive my GMC Sierra with a P0355 error code?

- It is not recommended to drive your vehicle with a P0355 error as it can lead to further damage and potentially unsafe driving conditions.

6. How do I repair a P0355 error in my 2017 GMC Sierra?

- Repairing a P0355 error may involve replacing the faulty ignition coil, repairing damaged wiring or connectors, resetting the ECM, or addressing any underlying issues causing the code.

7. Will resetting the OBDII system clear a P0355 error code?

- Resetting the OBDII system may temporarily clear the error code, but if the underlying issue causing the code is not addressed, the code is likely to reappear.

8. Are there any preventive measures to avoid a P0355 error in my GMC Sierra?

- Regularly maintaining your vehicle, including inspecting and replacing ignition coils as needed, can help prevent issues that may trigger a P0355 error code.

9. Is it necessary to seek professional help to fix a P0355 error in my 2017 GMC Sierra?

- While some DIY enthusiasts may be able to address the issue themselves, seeking professional help from a qualified mechanic is recommended for accurate diagnosis and repair of a P0355 error.

10. How much does it typically cost to fix a P0355 error in a 2017 GMC Sierra?

- The cost of fixing a P0355 error can vary depending on the specific cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. Expect costs to range from $100 to $300 or more.

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