Engine-CodesChevrolet – P0746 2017 Chevrolet Silverado

P0746 2017 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck Off

Quick Answer

The P0746 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Transmission Control Solenoid Valve 1 being stuck off. Common causes include Faulty Transmission Control Solenoid Valve 1, Wiring or electrical issues, 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
P0746 2017 Chevrolet Silverado indicates Transmission Control Solenoid Valve 1 Stuck Off.
Common causes
Common causes include Faulty Transmission Control Solenoid Valve 1, Wiring or electrical issues, 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 Sep 17, 2024
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Code P0746 2017 Chevrolet Silverado Description

The P0746 diagnostic trouble code (DTC) for a 2017 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 shifts. When the solenoid valve is stuck off, it means that it is not functioning properly, which can lead to various issues with the transmission system.

OBDII Code P0746 2017 Chevrolet Silverado - Transmission Control Solenoid Valve 1 Stuck Off
P0746 2017 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck Off

Common Causes of P0746 2017 Chevrolet Silverado

  1. Faulty Transmission Control Solenoid Valve 1
  2. Wiring or electrical issues
  3. Low transmission fluid levels
  4. Malfunctioning transmission control module

Symptoms of P0746 2017 Chevrolet Silverado

  1. Harsh or delayed shifting
  2. Erratic gear changes
  3. Transmission slipping
  4. Stuck in a particular gear
  5. Poor acceleration

How to Fix P0746 2017 Chevrolet Silverado

  1. Perform a diagnostic scan to confirm the P0746 code and identify the specific issue with the Transmission Control Solenoid Valve 1.
  2. Inspect the wiring and electrical connections related to the solenoid valve for any damage or corrosion.
  3. Check the transmission fluid level and condition, topping up or replacing as necessary.
  4. Test the Transmission Control Solenoid Valve 1 for proper operation and replace if found to be faulty.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0746 2017 Chevrolet Silverado

The typical repair costs for addressing the P0746 code on a 2017 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Most auto repair shops commonly charge between $80 and $150 per hour, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops.

Tech Notes for P0746 2017 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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