P0974 2017 GMC Sierra Code - Shift Solenoid Valve 1 Control Circuit High Voltage
Quick Answer
The P0974 diagnostic trouble code (DTC) for the 2017 GMC Sierra indicates a problem with the Shift Solenoid Valve 1 Control Circuit registering a high voltage. Common causes include Faulty Shift Solenoid Valve 1, Wiring issues or shorts in the control circuit, 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
- P0974 2017 GMC Sierra indicates Shift Solenoid Valve 1 Control Circuit High Voltage.
- Common causes
- Common causes include Faulty Shift Solenoid Valve 1, Wiring issues or shorts in the control circuit, 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 P0974 2017 GMC Sierra Description
The P0974 diagnostic trouble code (DTC) for the 2017 GMC Sierra indicates a problem with the Shift Solenoid Valve 1 Control Circuit registering a high voltage. This solenoid is responsible for controlling the flow of transmission fluid to engage the proper gear for smooth shifting. When the control circuit detects a higher voltage than expected, it can lead to issues with gear shifting, transmission performance, and overall drivability of the vehicle.
Common Causes of P0974 2017 GMC Sierra
- Faulty Shift Solenoid Valve 1
- Wiring issues or shorts in the control circuit
- Malfunctioning transmission control module
- Low transmission fluid levels
- Electrical issues such as corroded connectors
Symptoms of P0974 2017 GMC Sierra
- Harsh or delayed shifting
- Transmission slipping
- Illuminated Check Engine Light
- Decreased fuel efficiency
- Transmission overheating
How to Fix P0974 2017 GMC Sierra
- Begin by diagnosing the specific cause of the high voltage in the Shift Solenoid Valve 1 Control Circuit using a scan tool to pinpoint the issue.
- Inspect the wiring harness and connectors for any damage, corrosion, or loose connections. Repair or replace as needed.
- Test the Shift Solenoid Valve 1 for proper operation and replace if it is found to be faulty.
- Check the transmission fluid level and condition, topping up or replacing as necessary.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0974 2017 GMC Sierra
The cost of repairing a Shift Solenoid Valve 1 Control Circuit High Voltage issue can vary depending on the specific cause of the problem and the labor rates in your area. Typically, the cost of parts for a new solenoid valve can range from $50 to $200, while labor costs can range from $100 to $300. Overall, you can expect to pay anywhere from $150 to $500 for this repair. Keep in mind that additional diagnostic time and potential transmission fluid replacement costs may also apply. It's recommended to consult with a professional mechanic for an accurate estimate based on your vehicle's specific needs.
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