P0979 2015 Chevrolet Silverado Code - Shift Solenoid Valve 3 Control Circuit Low Voltage
Quick Answer
The P0979 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado refers to a Shift Solenoid Valve 3 Control Circuit Low Voltage. Common causes include Faulty shift solenoid valve 3, Damaged or corroded wiring in the control circuit, Poor electrical connection or loose wiring. 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
- P0979 2015 Chevrolet Silverado indicates Shift Solenoid Valve 3 Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty shift solenoid valve 3, Damaged or corroded wiring in the control circuit, Poor electrical connection or loose wiring.
- 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 P0979 2015 Chevrolet Silverado Description
The P0979 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado refers to a Shift Solenoid Valve 3 Control Circuit Low Voltage. This code indicates that there is a problem with the electrical circuit controlling the operation of the shift solenoid valve 3 in the transmission. The shift solenoid valve is responsible for regulating the flow of transmission fluid to control gear shifting. A low voltage condition in the control circuit can prevent the solenoid from functioning properly, leading to issues with gear shifting and overall transmission performance.
Common Causes of P0979 2015 Chevrolet Silverado
- Faulty shift solenoid valve 3
- Damaged or corroded wiring in the control circuit
- Poor electrical connection or loose wiring
- Faulty transmission control module (TCM)
- Low transmission fluid level or contaminated fluid
Symptoms of P0979 2015 Chevrolet Silverado
- Erratic shifting or delayed shifting
- Transmission slipping or difficulty engaging gears
- Illumination of the Check Engine Light
- Reduced fuel efficiency
- Harsh shifting or shifting into the wrong gear
How to Fix P0979 2015 Chevrolet Silverado
- Begin by conducting a thorough inspection of the shift solenoid valve 3 and its wiring harness for any visible damage or corrosion.
- Test the shift solenoid valve and the control circuit using a multimeter to check for proper voltage and continuity.
- Replace the shift solenoid valve 3 if it is found to be faulty, ensuring proper installation and connection.
- Repair or replace any damaged wiring or connectors in the control circuit.
- Clear the DTC from the vehicle's computer memory using a diagnostic scan tool and test drive the vehicle to ensure proper operation.
Cost to Fix P0979 2015 Chevrolet Silverado
The typical repair costs for addressing a P0979 code on a 2015 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of replacing a shift solenoid valve 3 and addressing any wiring or connection issues can range from $200 to $500, including parts and labor. It is recommended to consult with a qualified mechanic or repair shop for a more accurate cost estimate, as rates can vary based on location and other factors. Additionally, diagnostic time and labor rates at auto repair shops may also impact the overall cost of the repair.
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Frequently Asked Questions about P0979 2015 Chevrolet Silverado Code
1. What does the OBDII code P0979 mean on a 2015 Chevrolet Silverado?
P0979 indicates a low voltage issue in the control circuit for Shift Solenoid Valve 3, which is part of the transmission's control system.
2. What are the symptoms of code P0979 on a 2015 Chevrolet Silverado?
Common symptoms include transmission shifting problems, harsh or delayed shifts, the vehicle stuck in a specific gear, and the check engine light turning on.
3. What causes the P0979 code to appear on a 2015 Chevrolet Silverado?
Potential causes include a faulty shift solenoid valve, damaged wiring or connectors in the circuit, a failed transmission control module (TCM), or low transmission fluid levels.
4. How can I diagnose the P0979 code on my 2015 Chevrolet Silverado?
Start by checking the transmission fluid level and condition, inspecting the wiring and connectors for damage, and testing the Shift Solenoid Valve 3 circuit for proper voltage and continuity.
5. Can I drive my 2015 Chevrolet Silverado with the P0979 code?
Driving with this code is not recommended, as it can lead to further transmission damage and unsafe driving conditions due to improper shifting.
6. How do I fix the P0979 code on a 2015 Chevrolet Silverado?
Repairs may include replacing the faulty shift solenoid, repairing or replacing damaged wiring/connectors, or reprogramming or replacing the TCM if necessary.
7. How much does it cost to fix the P0979 code on a 2015 Chevrolet Silverado?
Repair costs vary, but replacing a shift solenoid typically costs between $150 and $400, while wiring repairs or TCM replacement can range higher depending on labor and parts.
8. Can low transmission fluid cause the P0979 code on a 2015 Chevrolet Silverado?
Yes, low or contaminated transmission fluid can affect solenoid function and lead to this code. Always ensure the fluid level and condition are correct.
9. How can I prevent the P0979 code from recurring on my 2015 Chevrolet Silverado?
Regularly maintain the transmission by checking fluid levels, inspecting wiring for damage, and addressing any shifting issues promptly.
10. Do I need a professional mechanic to fix the P0979 code on my 2015 Chevrolet Silverado?
While some basic diagnostics like checking fluid levels can be done at home, repairing the solenoid or wiring issues often requires professional tools and expertise.
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