P179B 2016 GMC Sierra Code - Transmission Range State Command Signal Message Counter Incorrect
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
- P179B 2016 GMC Sierra indicates Transmission Range State Command Signal Message Counter Incorrect.
- 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 P179B 2016 GMC Sierra Description
What are the Possible Causes of the DTC P179B 2016 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 P179B 2016 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 P179B 2016 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 P179B 2016 GMC Sierra code?
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Frequently Asked Questions about P179B 2016 GMC Sierra Code
1. What are the common symptoms of OBDII code P179B in a 2016 GMC Sierra?
- Common symptoms include transmission shifting issues, hesitation or jerking during gear changes, and the transmission being stuck in a single gear.
2. What causes the OBDII code P179B to appear in a 2016 GMC Sierra?
- The code typically indicates that the Transmission Range State Command Signal Message Counter is incorrect, which may be caused by a faulty transmission range sensor, wiring issues, or a malfunctioning transmission control module.
3. How serious is the OBDII code P179B in a 2016 GMC Sierra?
- This code indicates a problem with the transmission range state command signal, which can potentially lead to drivability issues and affect the overall performance of the vehicle. It is recommended to address this issue promptly.
4. Can I continue driving my 2016 GMC Sierra with the OBDII code P179B?
- It is not recommended to continue driving the vehicle with this code present, as it can lead to further transmission problems and potentially cause damage if left unresolved.
5. How can I diagnose the OBDII code P179B in my 2016 GMC Sierra?
- To diagnose this code, a professional diagnostic scan tool is typically used to retrieve the specific fault codes from the vehicle's computer system. Additionally, a thorough inspection of the transmission range sensor and related components may be necessary.
6. What are some repair tips for addressing the OBDII code P179B in a 2016 GMC Sierra?
- Repair tips may include checking and repairing any damaged wiring, replacing the transmission range sensor if faulty, or resetting the transmission control module to see if the code reoccurs.
7. How much does it generally cost to repair the OBDII code P179B in a 2016 GMC Sierra?
- The cost of repairing this code can vary depending on the underlying cause and the specific components that need to be replaced. It is advisable to consult with a professional mechanic for an accurate estimate.
8. Can a DIY enthusiast fix the OBDII code P179B in a 2016 GMC Sierra?
- While some basic troubleshooting and repairs can be done by a DIY enthusiast, diagnosing and fixing complex transmission issues like this code may require specialized tools and expertise. It is recommended to seek professional help if unsure.
9. Will resetting the OBDII code P179B in a 2016 GMC Sierra make it go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is crucial to diagnose and fix the root cause to prevent future occurrences.
10. How often does the OBDII code P179B occur in a 2016 GMC Sierra?
- The frequency of this code occurrence can vary depending on driving habits, maintenance history, and the overall condition of the vehicle. If the code appears, it should be addressed promptly to prevent further damage.
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