P189C 2015 GMC Sierra 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 2015 GMC Sierra 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 2015 GMC Sierra Description
What are the Possible Causes of the DTC P189C 2015 GMC Sierra?
- 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 2015 GMC Sierra?
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 2015 GMC Sierra 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.
Need more information about the P189C 2015 GMC Sierra code?
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Frequently Asked Questions about P189C 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code P189C in a 2015 GMC Sierra?
The common symptoms include issues with shifting gears, transmission slipping, difficulty engaging gears, and the transmission staying in one gear.
2. What are the possible causes of OBDII code P189C in a 2015 GMC Sierra?
The code P189C typically indicates a problem with the transmission range command message performance, which could be caused by a faulty transmission range sensor, wiring issues, or a malfunctioning transmission control module.
3. How can I diagnose OBDII code P189C in my 2015 GMC Sierra?
Diagnosing code P189C involves using a diagnostic scanner to retrieve the code, checking the transmission range sensor for proper operation, inspecting the wiring for any damage, and testing the transmission control module.
4. Can I continue driving my 2015 GMC Sierra with OBDII code P189C?
It is not recommended to continue driving with OBDII code P189C as it can lead to further damage to the transmission components. It's best to address the issue promptly to avoid potential safety hazards.
5. How can I repair OBDII code P189C in my 2015 GMC Sierra?
The repair for code P189C may involve replacing the transmission range sensor, repairing any damaged wiring, or reprogramming the transmission control module. It's recommended to consult a professional mechanic for an accurate diagnosis and repair.
6. Will resetting the OBDII code P189C in my 2015 GMC Sierra fix the issue?
Resetting the code may temporarily clear the check engine light, but it will not fix the underlying issue causing code P189C. It's important to diagnose and repair the root cause of the problem to prevent it from recurring.
7. How much does it cost to repair OBDII code P189C in a 2015 GMC Sierra?
The cost of repairing code P189C can vary depending on the specific cause of the issue, the parts needed for repair, and labor costs. It's advisable to get a few quotes from different mechanics to compare prices.
8. Can a DIY enthusiast fix OBDII code P189C in a 2015 GMC Sierra?
While some DIY enthusiasts may have the skills to diagnose and repair code P189C, it's a complex transmission-related issue that is best handled by a professional mechanic with the necessary tools and expertise.
9. How often does OBDII code P189C occur in a 2015 GMC Sierra?
Code P189C related to transmission range command message performance may occur infrequently in a 2015 GMC Sierra, but it should not be ignored as it can lead to serious transmission problems if left unresolved.
10. Is there a recall or technical service bulletin related to OBDII code P189C in a 2015 GMC Sierra?
It's advisable to check with a GMC dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or technical service bulletins related to OBDII code P189C in a 2015 GMC Sierra.
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