P0973 2018 GMC Sierra Code - Shift Solenoid Valve 1 Control Circuit Low Voltage
Quick Answer
The P0973 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Shift Solenoid Valve 1 Control Circuit, specifically detecting low voltage. Common causes include Faulty Shift Solenoid Valve 1, Damaged wiring or connectors, Malfunctioning TCM. 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
- P0973 2018 GMC Sierra indicates Shift Solenoid Valve 1 Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty Shift Solenoid Valve 1, Damaged wiring or connectors, Malfunctioning TCM.
- 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 P0973 2018 GMC Sierra Description
The P0973 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Shift Solenoid Valve 1 Control Circuit, specifically detecting low voltage. In an automatic transmission system, the shift solenoid valves are responsible for controlling the flow of transmission fluid to engage the appropriate gear for smooth shifting. When the control circuit for Shift Solenoid Valve 1 detects low voltage, it means that there is an issue with the electrical signal that controls the operation of this solenoid.
Common Causes of P0973 2018 GMC Sierra
- Faulty Shift Solenoid Valve 1
- Damaged wiring or connectors
- Malfunctioning TCM
- Low transmission fluid level
- Electrical issues
Symptoms of P0973 2018 GMC Sierra
- Harsh or delayed shifting
- Slipping gears
- Transmission not shifting
- Limp mode activation
How to Fix P0973 2018 GMC Sierra
- Begin by conducting a thorough inspection of the Shift Solenoid Valve 1 and its wiring harness for any visible damage.
- Test the solenoid and the circuit using a multimeter to check for proper voltage and continuity.
- Replace the Shift Solenoid Valve 1 if it is found to be faulty.
- Repair or replace any damaged wiring or connectors in the circuit.
- Clear the DTC and test drive the vehicle to ensure proper shifting operation.
Cost to Fix P0973 2018 GMC Sierra
The typical repair costs for addressing a P0973 code in a 2018 GMC Sierra can range from $150 to $400, including parts and labor. However, actual costs may vary depending on the specific diagnosis time and labor rates at auto repair shops, which can be influenced by factors such as location, vehicle make and model, and engine type. It is recommended to inquire about local rates for a more accurate estimate.
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