P189C 2018 Chevrolet Silverado Code - Transmission Range Command Message Performance
Quick Answer
Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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
- P189C 2018 Chevrolet Silverado indicates Transmission Range Command Message Performance.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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.
Code P189C 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P189C 2018 Chevrolet Silverado?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module harness is open or shorted
- Transmission Control Module circuit poor electrical connection
How to Fix the DTC P189C 2018 Chevrolet Silverado?
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 P189C 2018 Chevrolet Silverado 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.
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Frequently Asked Questions about P189C 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P189C in a 2018 Chevrolet Silverado?
- Common symptoms include transmission shifting issues, hesitation or jerking during gear changes, and the transmission slipping or not engaging properly.
2. What can cause the OBDII code P189C to appear in a 2018 Chevrolet Silverado?
- The code P189C is typically triggered by a malfunction in the transmission range command message performance, which could be caused by wiring issues, a faulty transmission range sensor, or a problem with the transmission control module.
3. How serious is OBDII code P189C in a 2018 Chevrolet Silverado?
- Code P189C can affect the performance and drivability of the vehicle, potentially leading to further transmission damage if left unresolved. It is recommended to address this issue promptly.
4. Can OBDII code P189C in a 2018 Chevrolet Silverado be fixed at home?
- Depending on the underlying cause, some DIY enthusiasts may be able to address code P189C by checking and repairing any damaged wiring, replacing the transmission range sensor, or reprogramming the transmission control module. However, complex transmission issues may require professional diagnosis and repair.
5. How can I diagnose OBDII code P189C in a 2018 Chevrolet Silverado?
- Diagnosing code P189C may involve using an OBDII scanner to retrieve the code and checking the transmission range sensor for proper operation. Additionally, inspecting the wiring harness for any damage or corrosion can help identify the issue.
6. Is it safe to continue driving with OBDII code P189C in a 2018 Chevrolet Silverado?
- It is not recommended to continue driving with code P189C present, as it can lead to further transmission problems and potentially unsafe driving conditions. It is best to have the issue addressed as soon as possible.
7. How much does it typically cost to repair OBDII code P189C in a 2018 Chevrolet Silverado?
- The cost of repairing code P189C can vary depending on the root cause of the issue. Repairs may range from a few hundred dollars for minor fixes like replacing a sensor to over a thousand dollars for more extensive transmission repairs.
8. Can a simple reset of the OBDII system clear code P189C in a 2018 Chevrolet Silverado?
- While clearing the code may temporarily turn off the check engine light, it will not fix the underlying issue causing code P189C. It is important to diagnose and address the root cause of the problem to prevent it from reoccurring.
9. Are there any recalls or technical service bulletins related to OBDII code P189C in a 2018 Chevrolet Silverado?
- It is recommended to check with the manufacturer or a certified Chevrolet dealership to inquire about any recalls or technical service bulletins related to code P189C in a 2018 Silverado. These resources may provide valuable information on known issues and potential solutions.
10. Will driving with OBDII code P189C in a 2018 Chevrolet Silverado affect fuel efficiency?
- Driving with code P189C may affect fuel efficiency due to the transmission not operating optimally, causing the engine to work harder than necessary. Resolving the issue can help improve fuel efficiency and overall vehicle performance.
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