Engine-CodesChevrolet – P0974 2017 Chevrolet Silverado

P0974 2017 Chevrolet Silverado Code - Shift Solenoid Valve 1 Control Circuit High Voltage

Quick Answer

The P0974 code in a 2017 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 1 Control Circuit registering high voltage. Common causes include Faulty Shift Solenoid Valve 1, Damaged or corroded wiring in the solenoid circuit, Poor electrical connection at the solenoid. 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 Chevrolet Silverado indicates Shift Solenoid Valve 1 Control Circuit High Voltage.
Common causes
Common causes include Faulty Shift Solenoid Valve 1, Damaged or corroded wiring in the solenoid circuit, Poor electrical connection at the solenoid.
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 Sep 12, 2024
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Code P0974 2017 Chevrolet Silverado Description

The P0974 code in a 2017 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 1 Control Circuit registering high voltage. The shift solenoid valves are crucial components of the transmission system that control the flow of transmission fluid to engage gears. In this case, a high voltage reading in the control circuit for solenoid valve 1 suggests an electrical issue that could potentially disrupt the proper operation of the transmission.

OBDII Code P0974 2017 Chevrolet Silverado - Shift Solenoid Valve 1 Control Circuit High Voltage
P0974 2017 Chevrolet Silverado Code - Shift Solenoid Valve 1 Control Circuit High Voltage

Common Causes of P0974 2017 Chevrolet Silverado

  1. Faulty Shift Solenoid Valve 1
  2. Damaged or corroded wiring in the solenoid circuit
  3. Poor electrical connection at the solenoid
  4. Issues with the Transmission Control Module
  5. Internal transmission damage

Symptoms of P0974 2017 Chevrolet Silverado

  1. Harsh shifting between gears
  2. Delayed gear engagement
  3. Transmission slipping
  4. Transmission failure to shift
  5. Illumination of the Check Engine Light

How to Fix P0974 2017 Chevrolet Silverado

  1. Begin by using a scan tool to verify the P0974 code and identify the specific issue with the Shift Solenoid Valve 1 Control Circuit.
  2. Inspect the wiring and connectors in the solenoid circuit for any damage, corrosion, or poor connections. Repair or replace as needed.
  3. Test the Shift Solenoid Valve 1 for proper operation and replace if found to be faulty.
  4. Clear the code from the vehicle's memory with the scan tool and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be necessary to identify any underlying transmission issues that could be contributing to the code.

Cost to Fix P0974 2017 Chevrolet Silverado

The cost of repairing a P0974 code in a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates of the auto repair shop. Typically, the parts required for this repair, such as a new Shift Solenoid Valve 1, wiring, or connectors, could range from $100 to $300. The labor costs can add an additional $100 to $200, bringing the total repair cost to around $200 to $500.

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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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