Engine-CodesChevrolet – P0973 2018 Chevrolet Silverado

P0973 2018 Chevrolet Silverado Code - Shift Solenoid Valve 1 Control Circuit Low Voltage

Quick Answer

The P0973 code in a 2018 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 1 Control Circuit experiencing low voltage. Common causes include Faulty shift solenoid valve, Wiring or connection issues in the control circuit, Low transmission fluid levels. 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 Chevrolet Silverado indicates Shift Solenoid Valve 1 Control Circuit Low Voltage.
Common causes
Common causes include Faulty shift solenoid valve, Wiring or connection issues in the control circuit, Low transmission fluid levels.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0973 2018 Chevrolet Silverado Description

The P0973 code in a 2018 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 1 Control Circuit experiencing low voltage. The shift solenoid valve is an essential component in the transmission system that controls the flow of transmission fluid and regulates the gear shifts. When the control circuit is registering low voltage, it can lead to issues with shifting gears smoothly, causing erratic or delayed gear changes. This can result in poor acceleration, reduced fuel efficiency, and potential damage to the transmission system if left unresolved.

OBDII Code P0973 2018 Chevrolet Silverado - Shift Solenoid Valve 1 Control Circuit Low Voltage
P0973 2018 Chevrolet Silverado Code - Shift Solenoid Valve 1 Control Circuit Low Voltage

Common Causes of P0973 2018 Chevrolet Silverado

  1. Faulty shift solenoid valve
  2. Wiring or connection issues in the control circuit
  3. Low transmission fluid levels
  4. Electrical problems in the transmission system
  5. Issues with the transmission control module

Symptoms of P0973 2018 Chevrolet Silverado

  1. Erratic or delayed gear shifts
  2. Harsh shifting between gears
  3. Transmission slipping
  4. Illuminated Check Engine Light
  5. Reduced fuel efficiency

How to Fix P0973 2018 Chevrolet Silverado

  1. Diagnose the specific cause of the low voltage in the Shift Solenoid Valve 1 Control Circuit using a scan tool.
  2. Inspect the wiring and connections for any damage, corrosion, or loose connections.
  3. Test the shift solenoid valve to determine if it is functioning correctly or needs replacement.
  4. Check and top up transmission fluid levels if necessary.
  5. Replace the faulty shift solenoid valve or repair any wiring/connection issues identified during diagnosis.

Cost to Fix P0973 2018 Chevrolet Silverado

The cost of repairing a Shift Solenoid Valve 1 Control Circuit low voltage issue in a 2018 Chevrolet Silverado can vary depending on the specific cause of the problem and the labor rates of the repair shop. Typically, replacing a shift solenoid valve or addressing wiring/connection issues can range from $150 to $400, including parts and labor. Additional costs may apply if other components need to be replaced or if further diagnostics are required. It is recommended to obtain quotes from different repair shops to get a more accurate estimate based on your location and vehicle specifics.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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