P189C GMC Code - Transmission Range Command Message Performance
Quick Answer
The P189C GMC code indicates a transmission range command message performance issue. Common causes include Faulty transmission control module, Damaged wiring or connectors in the transmission system, Malfunctioning transmission range 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
- P189C GMC indicates Transmission Range Command Message Performance.
- Common causes
- Common causes include Faulty transmission control module, Damaged wiring or connectors in the transmission system, Malfunctioning transmission range 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 P189C GMC Description
The P189C GMC code indicates a transmission range command message performance issue. This means that there is a problem with the communication between the transmission control module and other related components in the vehicle. The transmission range command message is crucial for the proper operation of the transmission system, as it helps determine which gear the vehicle should be in based on the driving conditions. When this message performance is compromised, it can lead to erratic shifting, poor performance, and potential damage to the transmission system.
Common Causes of P189C GMC
- Faulty transmission control module
- Damaged wiring or connectors in the transmission system
- Malfunctioning transmission range sensor
- Failing transmission solenoid
- Communication issues between transmission components
Symptoms of P189C GMC
- Erratic shifting or difficulty shifting gears
- Harsh or delayed transmission engagement
- Transmission slipping
- Vehicle going into "limp mode"
- Check engine light illuminated
How to Fix P189C GMC
- Perform a thorough diagnostic scan with a professional scan tool to retrieve the specific fault codes and data related to the transmission range command message performance issue.
- Inspect the wiring harness and connectors in the transmission system for any signs of damage or corrosion. Repair or replace as necessary.
- Test the transmission range sensor and transmission solenoid to ensure they are functioning correctly. Replace any faulty components.
- Check the transmission control module for any faults or programming issues. Reset or reprogram as needed.
- Clear the fault codes and perform a test drive to verify that the issue has been resolved.
Cost to Fix P189C GMC
The typical repair costs for a transmission range command message performance issue can range from $200 to $600, depending on the specific cause of the problem and the cost of parts and labor in your area. It's important to note that additional diagnostic time may be required to accurately diagnose the issue, so the final cost may vary. Be sure to consult with a reputable auto repair shop to get a more accurate estimate based on your vehicle's make and model.
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Information for Specific GMC Models
- P189C 2014 GMC Sierra — Transmission Range Command Message Performance
- P189C 2015 GMC Sierra — Transmission Range Command Message Performance
- P189C 2016 GMC Sierra — Transmission Range Command Message Performance
- P189C 2017 GMC Sierra — Transmission Range Command Message Performance
- P189C 2018 GMC Sierra — Transmission Range Command Message Performance
Frequently Asked Questions about P189C GMC Code
1. What are the common symptoms of OBDII code P189C GMC?
- Common symptoms of code P189C GMC include erratic shifting behavior, transmission slipping, and difficulty engaging certain gears.
2. What can cause the OBDII code P189C GMC to trigger?
- The code P189C GMC is typically triggered by issues with the transmission range command message performance, which may be caused by a faulty transmission range sensor or wiring issues.
3. How serious is the OBDII code P189C GMC?
- The code P189C GMC should be addressed promptly, as it can lead to drivability issues and potential damage to the transmission if left unresolved.
4. How do I diagnose the OBDII code P189C GMC?
- Diagnosing the code P189C GMC involves using a scan tool to read the code and perform further testing on the transmission range sensor and related components.
5. Can I continue driving with the OBDII code P189C GMC present?
- It is not recommended to continue driving with the code P189C GMC present, as it can affect the performance and reliability of the transmission.
6. What are some repair tips for fixing the OBDII code P189C GMC?
- Repair tips for resolving the code P189C GMC may include checking and repairing any damaged wiring, replacing the transmission range sensor, or reprogramming the transmission control module.
7. How much does it cost to repair the OBDII code P189C GMC?
- The cost of repairing the code P189C GMC can vary depending on the specific issue causing the code and the labor rates of the repair shop. It is recommended to obtain quotes from different mechanics.
8. Can I reset the OBDII code P189C GMC on my own?
- You can attempt to reset the code P189C GMC using an OBDII scan tool, but it is important to address the underlying issue causing the code to prevent it from reoccurring.
9. Are there any recalls related to the OBDII code P189C GMC?
- Check with the manufacturer or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls related to the code P189C GMC for your specific vehicle.
10. How can I prevent the OBDII code P189C GMC from coming back?
- To prevent the code P189C GMC from reoccurring, it is essential to address any underlying issues promptly, perform regular maintenance on the transmission system, and drive your vehicle responsibly.
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