P1358 GMC Code - Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 8
Quick Answer
The P1358 GMC code indicates that there is an issue with the Ignition Control Module (ICM) output being high or a pulse being detected when the cylinder 8 is grounded. Common causes include Faulty ignition control module, Wiring issues or poor electrical connections, Defective crankshaft position sensor. 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
- P1358 GMC indicates Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 8.
- Common causes
- Common causes include Faulty ignition control module, Wiring issues or poor electrical connections, Defective crankshaft position sensor.
- 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 P1358 GMC Description
The P1358 GMC code indicates that there is an issue with the Ignition Control Module (ICM) output being high or a pulse being detected when the cylinder 8 is grounded. The ICM is a crucial component of the ignition system responsible for controlling the timing of spark plug firing in each cylinder. When this code is triggered, it means that there is a problem with the ICM's ability to properly control the ignition timing for cylinder 8. This can lead to misfiring, poor engine performance, and potential damage to the engine if not addressed promptly.
Common Causes of P1358 GMC
- Faulty ignition control module
- Wiring issues or poor electrical connections
- Defective crankshaft position sensor
- Malfunctioning ignition coil
- Engine overheating leading to ignition system issues
Symptoms of P1358 GMC
- Rough idle or engine misfires
- Decreased fuel efficiency
- Engine stalling or hesitation
- Illuminated Check Engine Light
- Increased emissions
How to Fix P1358 GMC
- Diagnose the root cause by using a diagnostic scanner to retrieve the trouble code and perform additional testing on the ignition control module, wiring, crankshaft position sensor, and ignition coil.
- Replace the faulty ignition control module if it is determined to be the cause of the issue.
- Check and repair any damaged wiring or electrical connections related to the ignition system.
- Inspect and replace the crankshaft position sensor if necessary.
- Test the ignition coil and replace it if found to be defective.
Cost to Fix P1358 GMC
The cost of repairing a P1358 GMC code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair could range from $100 to $300, with labor costs adding an additional $100 to $200. Overall, you can expect to pay anywhere from $200 to $500 for this repair at an auto repair shop. However, it's advisable to obtain quotes from local shops to get a more accurate estimate based on your vehicle's make and model. Keep in mind that rates can also vary based on the engine type and any additional parts that may need to be replaced. It's essential to address this issue promptly to prevent further damage and ensure the optimal performance of your vehicle.
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