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P0746 2016 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck Off

Quick Answer

The P0746 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the Transmission Control Solenoid Valve 1 being stuck off. Common causes include Faulty Transmission Control Solenoid Valve 1, Electrical issues such as a broken wire or poor connection, Problems with the 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
P0746 2016 Chevrolet Silverado indicates Transmission Control Solenoid Valve 1 Stuck Off.
Common causes
Common causes include Faulty Transmission Control Solenoid Valve 1, Electrical issues such as a broken wire or poor connection, Problems with the 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P0746 2016 Chevrolet Silverado Description

The P0746 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the Transmission Control Solenoid Valve 1 being stuck off. This solenoid valve is a crucial component of the transmission system, responsible for regulating the flow of transmission fluid to control gear shifting. When this solenoid valve is stuck in the off position, it can lead to issues with gear shifting, transmission performance, and overall drivability of the vehicle.

OBDII Code P0746 2016 Chevrolet Silverado - Transmission Control Solenoid Valve 1 Stuck Off
P0746 2016 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck Off

Common Causes of P0746 2016 Chevrolet Silverado

  1. Faulty Transmission Control Solenoid Valve 1
  2. Electrical issues such as a broken wire or poor connection
  3. Problems with the transmission control module
  4. Regular wear and tear on the transmission components
  5. Overheating or contamination of transmission fluid

Symptoms of P0746 2016 Chevrolet Silverado

  1. Harsh or delayed shifting
  2. Slipping gears
  3. Transmission getting stuck in a gear
  4. Poor acceleration
  5. Reduced fuel efficiency

How to Fix P0746 2016 Chevrolet Silverado

  1. Diagnose the issue by using a scan tool to confirm the P0746 code and inspect the transmission system for any visible damage or leaks.
  2. Test the Transmission Control Solenoid Valve 1 to determine if it is functioning properly or needs to be replaced.
  3. Check the wiring and connections associated with the solenoid valve to ensure there are no electrical issues causing the malfunction.
  4. If the solenoid valve is faulty, replace it with a new one and refill the transmission fluid as needed.
  5. Clear the DTC from the vehicle's computer system and test drive the vehicle to ensure the transmission is shifting correctly.

Cost to Fix P0746 2016 Chevrolet Silverado

The typical repair costs for addressing a Transmission Control Solenoid Valve 1 Stuck Off issue can vary depending on the specific components that need to be replaced and the labor involved. On average, the cost of replacing a solenoid valve can range from $150 to $400, including parts and labor. Additional costs may apply if there are other underlying issues that need to be addressed. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0746 2016 Chevrolet Silverado

When a transmission solenoid has malfunctioned, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is dirty, it's recommended to change the transmission fluid and if possible, remove the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure, and that the transmission will need to be rebuilt or replaced.

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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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