P0979 Chevrolet Code - Shift Solenoid Valve 3 Control Circuit Low Voltage
Quick Answer
The Transmission Control Module (TCM) high side driver 1 supplies 12 V to pressure control solenoid valve 3. Common causes include Faulty Shift Solenoid Valve 3, Shift Solenoid Valve 3 harness is open or shorted, Shift Solenoid Valve 3 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
- P0979 Chevrolet indicates Shift Solenoid Valve 3 Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty Shift Solenoid Valve 3, Shift Solenoid Valve 3 harness is open or shorted, Shift Solenoid Valve 3 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 P0979 Chevrolet Description
What are the Possible Causes of the DTC P0979 Chevrolet?
- Faulty Shift Solenoid Valve 3
- Shift Solenoid Valve 3 harness is open or shorted
- Shift Solenoid Valve 3 circuit poor electrical connection
- Faulty Transmission Control Module (TCM)
How to Fix the DTC P0979 Chevrolet?
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 P0979 Chevrolet 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?
Get the P0979 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Information for Specific Chevrolet Models
- P0979 2014 Chevrolet Silverado — Shift Solenoid Valve 3 Control Circuit Low Voltage
- P0979 2015 Chevrolet Silverado — Shift Solenoid Valve 3 Control Circuit Low Voltage
- P0979 2016 Chevrolet Silverado — Shift Solenoid Valve 3 Control Circuit Low Voltage
- P0979 2017 Chevrolet Silverado — Shift Solenoid Valve 3 Control Circuit Low Voltage
- P0979 2018 Chevrolet Silverado — Shift Solenoid Valve 3 Control Circuit Low Voltage
Frequently Asked Questions about P0979 Chevrolet Code
1. What are the common symptoms of OBDII code P0979 in a Chevrolet vehicle?
- Common symptoms include harsh shifting, transmission slipping, delayed shifting, and the vehicle going into limp mode.
2. What usually causes the P0979 trouble code to appear in a Chevrolet vehicle?
- The P0979 code is typically caused by a faulty shift solenoid valve 3, issues with the wiring or connectors related to the solenoid, or a malfunction in the transmission control module.
3. How can I diagnose the Shift Solenoid Valve 3 Control Circuit Low Voltage issue in my Chevrolet?
- To diagnose the issue, you can use an OBDII scanner to retrieve the trouble codes, inspect the wiring and connectors for any damage or corrosion, and test the shift solenoid valve 3 for proper operation.
4. Can I continue driving my Chevrolet with OBDII code P0979 present?
- It is not recommended to continue driving with the P0979 code present, as it can lead to further damage to the transmission and potentially leave you stranded on the road.
5. What are some repair tips for fixing the Shift Solenoid Valve 3 Control Circuit Low Voltage problem in a Chevrolet?
- Repair tips include checking and repairing any damaged wiring or connectors, replacing the faulty shift solenoid valve 3, and resetting the trouble codes after the repair.
6. Is it possible to clear the P0979 trouble code in a Chevrolet without fixing the underlying issue?
- While you can clear the trouble code using an OBDII scanner, it is not recommended as the issue causing the code will persist and may lead to more significant problems in the future.
7. Are there any preventive measures I can take to avoid OBDII code P0979 in my Chevrolet?
- Regular maintenance, such as checking transmission fluid levels and quality, can help prevent issues that may trigger the P0979 trouble code.
8. Can a DIY enthusiast fix the Shift Solenoid Valve 3 Control Circuit Low Voltage problem in a Chevrolet?
- Depending on your skill level and access to tools, a DIY enthusiast may be able to fix the issue by following repair guides and being cautious when working on the transmission system.
9. How much does it typically cost to repair OBDII code P0979 in a Chevrolet at a professional mechanic's shop?
- The cost of repairing the P0979 code can vary depending on the extent of the damage and the labor rates of the mechanic, but it typically ranges from $200 to $500.
10. Is OBDII code P0979 a serious issue that requires immediate attention in a Chevrolet?
- Yes, the P0979 trouble code should be addressed promptly to prevent further damage to the transmission and ensure the safety and reliability of the vehicle.
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