P0979 2017 Chevrolet Silverado Code - Shift Solenoid Valve 3 Control Circuit Low Voltage
Quick Answer
The P0979 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 3 Control Circuit, specifically detecting low voltage. Common causes include Faulty shift solenoid valve, Damaged wiring or connectors in the control circuit, Low transmission fluid levels. 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 2017 Chevrolet Silverado indicates Shift Solenoid Valve 3 Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty shift solenoid valve, Damaged wiring or connectors in the control circuit, Low transmission fluid levels.
- 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 2017 Chevrolet Silverado Description
The P0979 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 3 Control Circuit, specifically detecting low voltage. The shift solenoid valve is a crucial component of the transmission system responsible for controlling the flow of transmission fluid to actuate gear shifts. In this case, the low voltage detected suggests an issue with the electrical circuit that controls the solenoid valve.
Common Causes of P0979 2017 Chevrolet Silverado
- Faulty shift solenoid valve
- Damaged wiring or connectors in the control circuit
- Low transmission fluid levels
- Issues with the transmission control module
- Electrical problems such as a blown fuse or relay
Symptoms of P0979 2017 Chevrolet Silverado
- Delayed or harsh shifting
- Erratic shifting patterns
- Transmission slipping
- Illuminated check engine light
- Reduced fuel efficiency
How to Fix P0979 2017 Chevrolet Silverado
- Begin by conducting a thorough diagnostic scan to confirm the P0979 code and identify the specific cause of the issue.
- Inspect the shift solenoid valve 3 and its wiring harness for any signs of damage or corrosion. Replace the solenoid valve if necessary.
- Check the transmission fluid level and condition. Top up or replace the fluid as needed.
- Inspect the transmission control module for any faults or malfunctions. Repair or replace the module if required.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0979 2017 Chevrolet Silverado
The typical repair costs for addressing a P0979 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of replacing a shift solenoid valve can range from $150 to $300, while addressing wiring or connector issues may cost between $100 and $200. Additional costs for diagnostic scans, transmission fluid replacement, or module repairs should also be considered. Overall, the total repair cost could range from $200 to $600 or more, including parts and labor. It is advisable to consult with a qualified mechanic or auto repair shop for an accurate estimate based on the specific circumstances of the vehicle. Labor rates at auto repair shops typically range from $80 to $150 per hour, but can vary based on location and other factors.
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Frequently Asked Questions about P0979 2017 Chevrolet Silverado Code
1. What does the OBDII code P0979 mean for a 2017 Chevrolet Silverado?
P0979 indicates a low voltage issue in the control circuit of shift solenoid valve 3, which affects the transmission’s ability to shift properly.
2. What are common symptoms of code P0979 in a 2017 Chevrolet Silverado?
Symptoms may include erratic shifting, being stuck in one gear, transmission slipping, or the check engine light turning on.
3. What causes the P0979 code in a Chevrolet Silverado?
Common causes include a faulty shift solenoid, damaged wiring or connectors in the solenoid circuit, low transmission fluid, or a malfunctioning transmission control module (TCM).
4. Can driving with code P0979 damage my Silverado’s transmission?
Yes, driving with this code can lead to further transmission damage due to improper shifting and fluid pressure regulation.
5. How do I diagnose code P0979 in a 2017 Chevrolet Silverado?
Diagnose by inspecting the wiring and connectors for damage, checking solenoid resistance with a multimeter, and verifying TCM functionality.
6. How do I fix the P0979 code in my Chevrolet Silverado?
Repairs may include replacing the faulty shift solenoid, repairing damaged wiring, cleaning connectors, or replacing the transmission control module.
7. How much does it cost to repair a P0979 code on a Silverado?
Costs typically range from $150 to $400 depending on whether the solenoid or wiring needs replacement, though prices vary by region and labor rates.
8. Can low transmission fluid cause the P0979 code in a Silverado?
Yes, insufficient transmission fluid can result in improper solenoid operation and trigger the P0979 code.
9. How can I prevent the P0979 code from occurring in my Silverado?
Regularly inspect and maintain transmission fluid levels, check wiring for wear, and promptly address any transmission issues.
10. Is the P0979 code specific to Chevrolet Silverados?
No, the P0979 code can appear in other vehicles with similar transmission systems, though the specifics may vary by make and model.
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