AutoCodes – Chevrolet – P189C 2015 Chevrolet Silverado

P189C 2015 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 2015 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.

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Code Popularity 267

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P189C 2015 Chevrolet Silverado Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Transmission Range Command Message Performance.

OBDII Code P189C 2015 Chevrolet Silverado - Transmission Range Command Message Performance - AutoCodes.com — P189C 2015 Chevrolet Silverado Code - Transmission Range Command Message Performance

What does this mean?

What are the Possible Causes of the DTC P189C 2015 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 2015 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 2015 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.

Need more information about the P189C 2015 Chevrolet Silverado code?

Need more information on how to fix the P189C 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

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Get the P189C 2015 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P189C 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P189C in a 2015 Chevrolet Silverado?

The common symptoms of code P189C include issues with shifting gears, hesitation or jerking when accelerating, and the transmission slipping.

2. What are the possible causes of OBDII code P189C in a 2015 Chevrolet Silverado?

Possible causes of code P189C can include a faulty transmission range sensor, wiring issues in the transmission control module, or a malfunctioning transmission control module itself.

3. How can I diagnose OBDII code P189C in my 2015 Chevrolet Silverado?

Diagnosing code P189C typically involves using a professional OBDII scanner to retrieve the fault code, checking the transmission range sensor for proper operation, and inspecting the wiring and connections related to the transmission control module.

4. Can I continue driving my 2015 Chevrolet Silverado with OBDII code P189C?

It is not recommended to continue driving your vehicle with code P189C present, as it can lead to further damage to the transmission and potentially result in unsafe driving conditions.

5. How can I repair OBDII code P189C in my 2015 Chevrolet Silverado?

Repairing code P189C may involve replacing the transmission range sensor, repairing any damaged wiring, or replacing the transmission control module if necessary.

6. Is it possible to reset OBDII code P189C in a 2015 Chevrolet Silverado?

While you can clear the fault code with an OBDII scanner, it is important to address the underlying issue causing code P189C to prevent it from reoccurring.

7. Are there any preventative maintenance tips to avoid OBDII code P189C in a 2015 Chevrolet Silverado?

Regularly servicing your transmission, checking for any signs of wear or damage in the transmission components, and addressing any transmission-related issues promptly can help prevent code P189C from occurring.

8. Can a DIY enthusiast repair OBDII code P189C in a 2015 Chevrolet Silverado?

Repairing code P189C may require advanced knowledge and tools, so it is recommended to consult a professional mechanic for proper diagnosis and repair.

9. How long does it typically take to repair OBDII code P189C in a 2015 Chevrolet Silverado?

The repair time for code P189C can vary depending on the exact cause of the issue, but it may take a few hours to a full day to diagnose and repair the problem.

10. Will OBDII code P189C cause my 2015 Chevrolet Silverado to fail an emissions test?

Code P189C may cause your vehicle to fail an emissions test, as it indicates a fault in the transmission system that can affect the overall performance of the vehicle.