Engine-CodesChevrolet – P0974 2016 Chevrolet Silverado

P0974 2016 Chevrolet Silverado Code - Shift Solenoid Valve 1 Control Circuit High Voltage

Quick Answer

The P0974 code on a 2016 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 1 Control Circuit, specifically detecting a high voltage condition. Common causes include Faulty shift solenoid valve, Wiring issues in the control circuit, Malfunctioning transmission control module (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
P0974 2016 Chevrolet Silverado indicates Shift Solenoid Valve 1 Control Circuit High Voltage.
Common causes
Common causes include Faulty shift solenoid valve, Wiring issues in the control circuit, Malfunctioning transmission control module (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.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P0974 2016 Chevrolet Silverado Description

The P0974 code on a 2016 Chevrolet Silverado indicates a problem with the Shift Solenoid Valve 1 Control Circuit, specifically detecting a high voltage condition. The shift solenoid valve is responsible for controlling the flow of transmission fluid to engage or disengage specific gears in the transmission. When the control circuit for this solenoid detects a high voltage, it means that there is an electrical issue affecting the proper operation of the solenoid.

OBDII Code P0974 2016 Chevrolet Silverado - Shift Solenoid Valve 1 Control Circuit High Voltage
P0974 2016 Chevrolet Silverado Code - Shift Solenoid Valve 1 Control Circuit High Voltage

Common Causes of P0974 2016 Chevrolet Silverado

  1. Faulty shift solenoid valve
  2. Wiring issues in the control circuit
  3. Malfunctioning transmission control module (TCM)
  4. Short circuit in the system
  5. Corrosion or damage to electrical connectors

Symptoms of P0974 2016 Chevrolet Silverado

  1. Delayed or harsh shifting
  2. Stuck in a particular gear
  3. Poor acceleration
  4. Reduced fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P0974 2016 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the wiring harness and connectors associated with the Shift Solenoid Valve 1 Control Circuit.
  2. Test the shift solenoid valve to determine if it is functioning correctly. If it is faulty, replace it with a new one.
  3. Check the transmission control module (TCM) for any signs of damage or malfunction. Replace if necessary.
  4. Clear the diagnostic trouble codes from the vehicle's computer and perform a test drive to ensure that the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to pinpoint the exact cause of the high voltage condition.

Cost to Fix P0974 2016 Chevrolet Silverado

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. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to obtain quotes from multiple sources to ensure a fair price.

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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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