P0979 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0979 2014 Chevrolet Silverado?
- 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 2014 Chevrolet Silverado?
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 2014 Chevrolet Silverado 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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Frequently Asked Questions about P0979 2014 Chevrolet Silverado Code
1. What does the OBDII code P0979 mean on a 2014 Chevrolet Silverado?
P0979 indicates a "Shift Solenoid Valve 3 Control Circuit Low Voltage," meaning the PCM has detected an electrical issue in the circuit controlling shift solenoid 3.
2. What are the common symptoms of code P0979 in a 2014 Chevrolet Silverado?
Symptoms may include difficulty shifting gears, harsh or delayed shifting, transmission stuck in one gear, or the check engine light coming on.
3. What causes the P0979 code to appear on a 2014 Chevrolet Silverado?
Common causes include damaged wiring or connectors in the shift solenoid circuit, a faulty shift solenoid, a failing PCM, or low transmission fluid.
4. How do I diagnose the P0979 code on my 2014 Chevrolet Silverado?
Start by inspecting the wiring and connectors for damage or corrosion, checking the transmission fluid level, and testing the shift solenoid for proper operation using a multimeter.
5. Can I drive my 2014 Chevrolet Silverado with a P0979 code?
Driving with this code is not recommended, as it may lead to transmission damage or unsafe driving conditions due to improper gear shifting.
6. How can I fix the P0979 code on a 2014 Chevrolet Silverado?
Repairs may include replacing damaged wiring or connectors, replacing the shift solenoid, refilling or replacing transmission fluid, or reprogramming/repairing the PCM if necessary.
7. How much does it typically cost to fix a P0979 code on a 2014 Chevrolet Silverado?
Repair costs can range from $150 to $500 or more, depending on whether the issue is related to wiring, the shift solenoid, or the PCM.
8. What tools are needed to fix the P0979 code on a 2014 Chevrolet Silverado?
Basic tools include a multimeter for electrical testing, a code scanner, and possibly a transmission fluid dipstick or pan removal tools for fluid inspection.
9. Can low transmission fluid cause the P0979 code on a 2014 Chevrolet Silverado?
Yes, low or dirty transmission fluid can cause improper solenoid operation, leading to the P0979 code.
10. Will clearing the code with a scanner fix the P0979 issue on a 2014 Chevrolet Silverado?
Clearing the code may temporarily remove the check engine light, but the underlying issue must be repaired to prevent the code from returning.
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