P179A GMC Code - Auxiliary Transmission Fluid Pump Overspeed
Quick Answer
The P179A GMC code indicates an issue with the auxiliary transmission fluid pump overspeed in the vehicle. Common causes include Malfunctioning auxiliary transmission fluid pump motor, Faulty pump control module, Wiring issues in the pump circuit. 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
- P179A GMC indicates Auxiliary Transmission Fluid Pump Overspeed.
- Common causes
- Common causes include Malfunctioning auxiliary transmission fluid pump motor, Faulty pump control module, Wiring issues in the pump circuit.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P179A GMC Description
The P179A GMC code indicates an issue with the auxiliary transmission fluid pump overspeed in the vehicle. The auxiliary transmission fluid pump is responsible for maintaining proper fluid pressure within the transmission system to ensure smooth gear shifts and overall transmission performance. When the pump operates at an excessive speed, it can lead to various problems within the transmission system.
Common Causes of P179A GMC
- Malfunctioning auxiliary transmission fluid pump motor
- Faulty pump control module
- Wiring issues in the pump circuit
- Problem with the transmission fluid pressure sensor
- Low transmission fluid levels
Symptoms of P179A GMC
- Erratic shifting
- Harsh gear changes
- Transmission slipping
- Transmission overheating
- Illumination of the Check Engine Light
How to Fix P179A GMC
- Begin by conducting a thorough diagnostic scan to confirm the P179A GMC code and identify the specific cause of the overspeed condition.
- Inspect the auxiliary transmission fluid pump motor and control module for any signs of damage or malfunction. Replace any faulty components as needed.
- Check the wiring in the pump circuit for any breaks, shorts, or loose connections. Repair or replace damaged wiring as necessary.
- Test the transmission fluid pressure sensor to ensure it is functioning correctly. Replace the sensor if it is found to be faulty.
- Refill the transmission fluid to the proper level and clear the diagnostic trouble codes to reset the system.
Cost to Fix P179A GMC
The typical repair costs for addressing the P179A GMC code related to the auxiliary transmission fluid pump overspeed can range from $200 to $800, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. For a more accurate estimate, it is recommended to inquire with local auto repair shops.
Need more information about the P179A GMC code?
Need more information on how to fix the P179A GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P179A GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P179A GMC Code
1. What are common symptoms of OBDII code P179A in a GMC related to the Auxiliary Transmission Fluid Pump Overspeed issue?
The common symptoms include harsh shifting, transmission slipping, reduced fuel efficiency, and illuminated check engine light.
2. What could be the possible causes of OBDII code P179A GMC Auxiliary Transmission Fluid Pump Overspeed?
The code P179A could be triggered by issues such as a faulty auxiliary transmission fluid pump, low transmission fluid levels, electrical problems, or a malfunctioning transmission control module.
3. How serious is the OBDII code P179A GMC Auxiliary Transmission Fluid Pump Overspeed issue?
While the vehicle may still be operable with this issue, it is important to address it promptly to prevent potential damage to the transmission system and ensure optimal performance.
4. Can I continue driving my GMC with the OBDII code P179A present?
It is not recommended to continue driving the vehicle with the code P179A active, as it could lead to further transmission problems if left unresolved.
5. How can I diagnose the OBDII code P179A GMC Auxiliary Transmission Fluid Pump Overspeed?
Diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault code and then conducting a thorough inspection of the transmission fluid pump, fluid levels, and related components.
6. What are some repair tips for addressing the OBDII code P179A GMC Auxiliary Transmission Fluid Pump Overspeed?
Repair tips may include checking and replacing the auxiliary transmission fluid pump, ensuring proper fluid levels, inspecting electrical connections, and resetting the fault code after repairs are completed.
7. Can I reset the OBDII code P179A GMC Auxiliary Transmission Fluid Pump Overspeed myself?
Yes, you can attempt to clear the code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.
8. How much does it typically cost to repair the OBDII code P179A GMC Auxiliary Transmission Fluid Pump Overspeed?
The cost of repairs can vary depending on the extent of the issue, the parts needed, and labor costs. It is recommended to consult a professional mechanic for an accurate estimate.
9. Are there any preventative measures to avoid the OBDII code P179A GMC Auxiliary Transmission Fluid Pump Overspeed issue?
Regularly servicing the transmission system, checking fluid levels, and addressing any warning signs promptly can help prevent issues leading to the code P179A.
Discuss the causes and fixes for P179A GMC OBDII Code
Code P179A GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.