P179B GMC 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 GMC 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 GMC Description
What are the Possible Causes of the DTC P179B GMC?
- 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 GMC?
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 GMC 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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Need Help with the Code?
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Information for Specific GMC Models
- P179B 2014 GMC Sierra — Transmission Range State Command Signal Message Counter Incorrect
- P179B 2015 GMC Sierra — Transmission Range State Command Signal Message Counter Incorrect
- P179B 2016 GMC Sierra — Transmission Range State Command Signal Message Counter Incorrect
- P179B 2017 GMC Sierra — Transmission Range State Command Signal Message Counter Incorrect
- P179B 2018 GMC Sierra — Transmission Range State Command Signal Message Counter Incorrect
Frequently Asked Questions about P179B GMC Code
1. What are the common symptoms of OBDII code P179B in a GMC vehicle?
- Common symptoms include erratic shifting, transmission slipping, and illumination of the check engine light.
2. What can cause the OBDII code P179B to appear in a GMC vehicle?
- The code P179B typically occurs due to a malfunction in the Transmission Range State Command Signal Message Counter.
3. How can I diagnose the OBDII code P179B in my GMC vehicle?
- To diagnose the code P179B, a professional diagnostic scan tool is needed to read the specific error codes stored in the vehicle's computer system.
4. What are some repair tips for fixing the OBDII code P179B in a GMC vehicle?
- Repair tips may include checking and repairing any wiring issues related to the transmission range sensor, ensuring proper connection of all transmission components, and resetting the fault codes after repairs are made.
5. Is it safe to continue driving my GMC vehicle with the OBDII code P179B present?
- It is not recommended to continue driving with the code P179B as it can lead to further damage to the transmission system if left unresolved.
6. Can a DIY enthusiast fix the OBDII code P179B issue in a GMC vehicle?
- While some DIY enthusiasts may have the skills to address the OBDII code P179B, it is recommended to seek professional help due to the complexity of transmission-related repairs.
7. How much does it typically cost to repair the OBDII code P179B in a GMC vehicle?
- The cost of repairing the code P179B can vary depending on the extent of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services.
8. Will resetting the check engine light resolve the OBDII code P179B in a GMC vehicle?
- Resetting the check engine light may temporarily clear the code, but it is crucial to diagnose and address the underlying issue causing the code P179B for a permanent solution.
9. Are there any recalls or technical service bulletins related to the OBDII code P179B in GMC vehicles?
- It is recommended to check with a GMC dealership or online resources for any recalls or technical service bulletins related to the code P179B to stay informed about potential solutions.
10. How can I prevent the OBDII code P179B from reoccurring in my GMC vehicle?
- Regular maintenance, timely repairs of transmission components, and addressing any related issues promptly can help prevent the code P179B from reoccurring in a GMC vehicle.
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