P1355 GMC Code - Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 5
Quick Answer
The P1355 diagnostic trouble code (DTC) for GMC vehicles indicates that the Ignition Control Module (ICM) has detected a high voltage or abnormal pulse when attempting to ground cylinder 5 in the ignition system. Common causes include Faulty ignition control module, Electrical shorts in the wiring, Corrosion in the connections. 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
- P1355 GMC indicates Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 5.
- Common causes
- Common causes include Faulty ignition control module, Electrical shorts in the wiring, Corrosion in the connections.
- 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.
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Code P1355 GMC Description
The P1355 diagnostic trouble code (DTC) for GMC vehicles indicates that the Ignition Control Module (ICM) has detected a high voltage or abnormal pulse when attempting to ground cylinder 5 in the ignition system. This issue can have detrimental effects on the vehicle's performance, as the ignition control module plays a crucial role in controlling the timing of the spark plugs, which in turn affects the combustion process in the engine.
Common Causes of P1355 GMC
- Faulty ignition control module
- Electrical shorts in the wiring
- Corrosion in the connections
- Internal component failure
- Issues with the ground circuit for cylinder 5
Symptoms of P1355 GMC
- Misfiring or rough idling
- Decreased fuel efficiency
- Loss of power
- Engine stalling
- Illumination of the Check Engine Light
How to Fix P1355 GMC
- Perform a thorough inspection of the ignition control module and surrounding wiring to identify any visible damage or corrosion.
- Test the ignition control module using a multimeter to check for proper voltage output and continuity.
- Replace the ignition control module if it is determined to be faulty.
- Check and repair any wiring issues or corrosion in the connections.
- Clear the DTC codes and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1355 GMC
The cost of repairing the P1355 DTC can vary depending on the specific GMC model, the location of the repair shop, and the labor rates. Typically, the parts for replacing the ignition control module can range from $100 to $300, while the labor costs can add an additional $100 to $200. Overall, the total repair cost for this issue may range from $200 to $500. It is recommended to consult with a professional mechanic for a more accurate estimate based on your vehicle's specific needs.
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Frequently Asked Questions about P1355 GMC Code
What does the OBDII code P1355 mean for a GMC vehicle?
P1355 indicates an Ignition Control Module (ICM) output high or pulse detected when grounded for cylinder 5. This typically points to an issue with the ignition system or wiring.
What are the common symptoms of code P1355 in a GMC?
Symptoms may include engine misfires, rough idling, poor acceleration, reduced fuel efficiency, and the check engine light turning on.
What causes the P1355 code in a GMC?
Common causes include a faulty Ignition Control Module (ICM), damaged ignition coil for cylinder 5, wiring issues, or a malfunctioning crankshaft position sensor.
Can a faulty spark plug cause code P1355?
While unlikely, a worn-out or damaged spark plug for cylinder 5 could contribute to ignition problems, but the primary issue is usually with the ICM or related components.
How can I diagnose the P1355 code on a GMC vehicle?
Start by inspecting the ignition coil, spark plug, and wiring for cylinder 5. Use a multimeter to check the ICM and related circuits for proper voltage and continuity.
Is the P1355 code specific to cylinder 5?
Yes, the code specifically refers to ignition control issues related to cylinder 5 in the engine.
Can driving with code P1355 damage my GMC engine?
Driving with this code may cause engine misfires, leading to potential damage to the catalytic converter or other engine components over time.
How do you fix the P1355 code on a GMC?
Repairs may include replacing the Ignition Control Module (ICM), ignition coil, or crankshaft position sensor, and repairing or replacing damaged wiring.
Will clearing the P1355 code fix the problem?
Clearing the code will turn off the check engine light temporarily, but it won’t resolve the underlying issue causing the code. Proper diagnosis and repairs are necessary.
Can a failing crankshaft position sensor trigger the P1355 code in a GMC?
Yes, a failing crankshaft position sensor can disrupt ignition timing and contribute to the P1355 code.
Discuss the causes and fixes for P1355 GMC OBDII Code
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