AutoCodes – GMC – P0355 2017 GMC Sierra

P0355 2017 GMC Sierra Code - Ignition Coil 5 Control Circuit

Quick Answer

The ignition system on this engine uses ignition coils with integrated power transistors. Common causes include Faulty Ignition Coil 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 circuit poor electrical connection. 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 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 236

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0355 2017 GMC Sierra Description

The ignition system on this engine uses ignition coils with integrated power transistors. The Engine Control Module (ECM) controls the spark event for each cylinder through individual ignition coil control circuits. When the ECM commands the ignition control circuit On, electrical current flows through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM commands the ignition control circuit Off, interrupting current flow through the primary winding. The collapsing magnetic field created by the primary winding induces a high voltage in the secondary winding, which is connected to the spark plugs. The Diagnostic Trouble Code (DTC) will be set when the control circuit commanded by the ECM state does not match the actual state.

OBDII Code P0355 2017 GMC Sierra - Ignition Coil 5 Control Circuit - AutoCodes.com — P0355 2017 GMC Sierra Code - Ignition Coil 5 Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0355 2017 GMC Sierra?

Faulty Ignition Coil 5
Ignition Coil 5 harness is open or shorted
Ignition Coil 5 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0355 2017 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0355 2017 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0355 2017 GMC Sierra code?

Need more information on how to fix the P0355 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0355 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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.