P179B 2017 GMC Sierra Code - Transmission Range State Command Signal Message Counter Incorrect
Quick Answer
The P179B code for a 2017 GMC Sierra indicates a problem with the Transmission Range State Command Signal Message Counter being incorrect. Common causes include Faulty transmission range sensor, Wiring issues such as shorts or open circuits, Malfunctioning transmission control module. 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
- P179B 2017 GMC Sierra indicates Transmission Range State Command Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty transmission range sensor, Wiring issues such as shorts or open circuits, Malfunctioning transmission control module.
- 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 P179B 2017 GMC Sierra Description
The P179B code for a 2017 GMC Sierra indicates a problem with the Transmission Range State Command Signal Message Counter being incorrect. This code typically means that the vehicle's transmission control module is receiving an incorrect signal related to the transmission range state command. The transmission range state command signal is crucial for the proper operation of the transmission, as it tells the transmission control module which gear the vehicle is in.
Common Causes of P179B 2017 GMC Sierra
- Faulty transmission range sensor
- Wiring issues such as shorts or open circuits
- Malfunctioning transmission control module
- Software glitches or updates needed
- Communication errors between various control modules
Symptoms of P179B 2017 GMC Sierra
- Erratic or rough shifting
- Delayed or harsh gear changes
- Transmission slipping
- Transmission getting stuck in a specific gear
- Check Engine Light illuminated
How to Fix P179B 2017 GMC Sierra
- Diagnose the issue with a professional scan tool to determine the exact cause of the incorrect signal.
- Inspect the transmission range sensor and wiring for any damage or faults. Repair or replace as needed.
- Check the transmission control module for any malfunctions. Update software if necessary or replace the module.
- Clear the code and reset the transmission control module.
- Test drive the vehicle to ensure the issue has been resolved and the code does not return.
Cost to Fix P179B 2017 GMC Sierra
The typical repair costs for addressing a P179B code on a 2017 GMC Sierra can range from $200 to $600, depending on the exact cause of the issue and the labor rates at the repair shop. This estimate includes the cost of parts such as a new transmission range sensor or transmission control module, as well as labor for diagnosis and repair. Keep in mind that labor rates can vary based on location, shop rates, and the complexity of the repair. It's advisable to get a few quotes from different repair shops to compare costs.
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Frequently Asked Questions about P179B 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code P179B in a 2017 GMC Sierra?
- Common symptoms may include issues with shifting gears, transmission slipping, and the vehicle going into limp mode.
2. What does the OBDII code P179B on a 2017 GMC Sierra mean?
- The code indicates that the Transmission Range State Command Signal Message Counter is incorrect, potentially affecting the transmission's operation.
3. What are the possible causes of OBDII code P179B in a 2017 GMC Sierra?
- Common causes can include faulty transmission range sensor, damaged wiring or connectors, software issues, or a malfunctioning transmission control module.
4. How can I diagnose OBDII code P179B in my 2017 GMC Sierra?
- Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking the transmission range sensor, inspecting wiring connections, and performing a software update if necessary.
5. Can I continue driving my 2017 GMC Sierra with OBDII code P179B?
- It is not recommended to drive the vehicle with this code present, as it can lead to further transmission issues and potential safety hazards.
6. How can I reset OBDII code P179B on my 2017 GMC Sierra?
- Resetting the code can be done with a diagnostic scanner by clearing the code after addressing the underlying issue causing it.
7. Is it safe to ignore OBDII code P179B in a 2017 GMC Sierra?
- Ignoring the code can lead to more serious transmission problems and potential damage, so it is best to address the issue promptly.
8. Can OBDII code P179B in a 2017 GMC Sierra be fixed without professional help?
- While some DIYers may be able to address simple causes like loose connections, more complex issues may require professional diagnosis and repair.
9. What are the repair options for OBDII code P179B in a 2017 GMC Sierra?
- Repair options may include replacing the transmission range sensor, repairing wiring or connectors, updating software, or replacing the transmission control module.
10. How much does it cost to fix OBDII code P179B in a 2017 GMC Sierra?
- The cost of repair can vary depending on the underlying cause and the extent of the repairs needed, so it is advisable to obtain estimates from a qualified mechanic.
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