P0979 2018 Chevrolet Silverado Code - Shift Solenoid Valve 3 Control Circuit Low Voltage
Quick Answer
The OBD-II code P0979 for a 2018 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 3 Control Circuit, specifically a low voltage issue. Common causes include Damaged wiring or connectors in the Shift Solenoid Valve 3 control circuit, Faulty Shift Solenoid Valve 3, Malfunctioning transmission control module. 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 2018 Chevrolet Silverado indicates Shift Solenoid Valve 3 Control Circuit Low Voltage.
- Common causes
- Common causes include Damaged wiring or connectors in the Shift Solenoid Valve 3 control circuit, Faulty Shift Solenoid Valve 3, Malfunctioning transmission control module.
- 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 2018 Chevrolet Silverado Description
The OBD-II code P0979 for a 2018 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 3 Control Circuit, specifically a low voltage issue. The Shift Solenoid Valve is responsible for controlling the flow of transmission fluid to actuate gear shifts in an automatic transmission system. In this case, a low voltage in the control circuit of Shift Solenoid Valve 3 can lead to improper shifting patterns, affecting the vehicle's performance and drivability.
Common Causes of P0979 2018 Chevrolet Silverado
- Damaged wiring or connectors in the Shift Solenoid Valve 3 control circuit
- Faulty Shift Solenoid Valve 3
- Malfunctioning transmission control module
- Low transmission fluid levels or contaminated fluid
- Electrical issues such as a blown fuse or short circuit
Symptoms of P0979 2018 Chevrolet Silverado
- Delayed or harsh shifting
- Erratic transmission behavior
- Transmission slippage
- Poor fuel efficiency
- Decreased acceleration
How to Fix P0979 2018 Chevrolet Silverado
- Diagnose the issue with a scan tool to confirm the P0979 code and identify the specific cause of the low voltage condition.
- Inspect the wiring and connectors in the Shift Solenoid Valve 3 control circuit for any damage or corrosion. Repair or replace as needed.
- Test the Shift Solenoid Valve 3 for proper operation and replace if it is found to be faulty.
- Check the transmission control module for any malfunctions or programming issues. Re-flash or replace the module if necessary.
- Clear the trouble codes, reset the transmission adaptations, and test drive the vehicle to ensure proper shifting behavior.
Cost to Fix P0979 2018 Chevrolet Silverado
The typical repair costs for addressing a P0979 code on a 2018 Chevrolet Silverado can range from $200 to $600, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the diagnosis time, replacement of any damaged components, and labor for the repair process. It's important to note that labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple shops to find the best price for the repair.
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