P1320 GMC Code - IC Module 4X Reference Circuit Intermittent No Pulses
Quick Answer
The P1320 GMC diagnostic trouble code (DTC) indicates an issue with the IC Module 4X Reference Circuit Intermittent No Pulses. Common causes include Faulty ignition control module (ICM), Damaged wiring or connectors in the IC Module 4X reference circuit, Poor electrical connection between the ICM and ECM. 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
- P1320 GMC indicates IC Module 4X Reference Circuit Intermittent No Pulses.
- Common causes
- Common causes include Faulty ignition control module (ICM), Damaged wiring or connectors in the IC Module 4X reference circuit, Poor electrical connection between the ICM and ECM.
- 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 P1320 GMC Description
The P1320 GMC diagnostic trouble code (DTC) indicates an issue with the IC Module 4X Reference Circuit Intermittent No Pulses. In simpler terms, this code suggests that the engine control module (ECM) is not receiving the proper signals from the ignition control module (ICM) regarding the position of the crankshaft. This lack of communication can lead to various performance issues and potentially cause the vehicle to stall or misfire.
Common Causes of P1320 GMC
- Faulty ignition control module (ICM)
- Damaged wiring or connectors in the IC Module 4X reference circuit
- Poor electrical connection between the ICM and ECM
- Malfunctioning crankshaft position sensor
- ECM software issues
Symptoms of P1320 GMC
- Engine misfires
- Rough idling
- Stalling
- Decreased fuel efficiency
- Illuminated check engine light
How to Fix P1320 GMC
- Begin by performing a visual inspection of the wiring and connectors in the IC Module 4X reference circuit. Look for any signs of damage, corrosion, or loose connections. Repair or replace any faulty components.
- Test the ignition control module (ICM) using a multimeter to check for proper functionality. Replace the ICM if it is found to be faulty.
- Inspect the crankshaft position sensor for any damage or malfunction. Replace the sensor if necessary.
- Check the electrical connection between the ICM and ECM to ensure a secure and stable connection. Repair or replace any damaged connectors.
- Clear the diagnostic trouble codes from the ECM using a scan tool, and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P1320 GMC
The cost of repairing the IC Module 4X Reference Circuit Intermittent No Pulses issue can vary depending on the specific cause of the problem and the labor rates in your area. Generally, replacing the ignition control module (ICM) can cost between $200 and $400, while replacing a faulty crankshaft position sensor may range from $50 to $150. Additionally, the cost of labor can add another $100 to $200 to the total repair bill. Overall, the total repair cost for this issue could be in the range of $350 to $750, but it's advisable to obtain a detailed quote from a reputable auto repair shop in your area. Keep in mind that rates may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed.
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