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P0746 2014 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck Off

Quick Answer

The P0746 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates an issue with the Transmission Control Solenoid Valve 1 being stuck off. Common causes include Faulty Transmission Control Solenoid Valve 1, Wiring issues or electrical connection problems, 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 2014 Chevrolet Silverado indicates Transmission Control Solenoid Valve 1 Stuck Off.
Common causes
Common causes include Faulty Transmission Control Solenoid Valve 1, Wiring issues or electrical connection problems, 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P0746 2014 Chevrolet Silverado Description

The P0746 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates an issue with the Transmission Control Solenoid Valve 1 being stuck off. This solenoid valve is a crucial component of the transmission system, responsible for controlling the flow of transmission fluid to engage and disengage gears. When the solenoid valve is stuck off, it means that it is not functioning properly, leading to potential transmission problems.

OBDII Code P0746 2014 Chevrolet Silverado - Transmission Control Solenoid Valve 1 Stuck Off
P0746 2014 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck Off

Common Causes of P0746 2014 Chevrolet Silverado

  1. Faulty Transmission Control Solenoid Valve 1
  2. Wiring issues or electrical connection problems
  3. Low transmission fluid levels
  4. Internal transmission problems
  5. Mechanical damage to the solenoid valve

Symptoms of P0746 2014 Chevrolet Silverado

  1. Delayed or harsh shifting
  2. Erratic transmission behavior
  3. Decreased fuel efficiency
  4. Illuminated check engine light
  5. Transmission slipping

How to Fix P0746 2014 Chevrolet Silverado

  1. Perform a diagnostic scan to confirm the P0746 code and identify the specific issue.
  2. Inspect the Transmission Control Solenoid Valve 1 for any signs of damage or malfunction.
  3. Check the wiring and electrical connections related to the solenoid valve for any issues.
  4. Replace the faulty solenoid valve if necessary.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0746 2014 Chevrolet Silverado

The typical repair costs for addressing a P0746 code on a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of replacing a Transmission Control Solenoid Valve 1 can range from $150 to $300 for the part alone. Labor costs can add an additional $100 to $200, bringing the total repair cost to approximately $250 to $500. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and labor rates at auto repair shops. It's recommended to obtain quotes from local shops to get a more accurate estimate for the repair.

What does this mean?

Tech Notes for P0746 2014 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.

Frequently Asked Questions about P0746 2014 Chevrolet Silverado Code

1. What does OBDII code P0746 mean for a 2014 Chevrolet Silverado?

P0746 indicates that the transmission control solenoid valve 1 is stuck off, which can affect the transmission's ability to shift properly.

2. What are common symptoms of code P0746 in a 2014 Chevrolet Silverado?

Symptoms may include harsh or delayed shifting, transmission slipping, reduced fuel efficiency, and the check engine light turning on.

3. What causes code P0746 on a 2014 Chevrolet Silverado?

Common causes include a faulty transmission control solenoid, dirty or low transmission fluid, wiring issues, or internal transmission damage.

4. Can driving with code P0746 damage my 2014 Chevrolet Silverado?

Yes, continued driving with this code may lead to further transmission damage or failure, especially if the problem is related to low fluid or internal issues.

5. How can I diagnose code P0746 on my 2014 Chevrolet Silverado?

Diagnosis typically involves scanning the vehicle with an OBDII tool, inspecting the transmission fluid, checking the solenoid and wiring for damage, and possibly performing a pressure test on the transmission.

6. How do I fix code P0746 on a 2014 Chevrolet Silverado?

Repairs may include replacing the faulty solenoid, refilling or flushing the transmission fluid, repairing damaged wiring, or addressing internal transmission problems.

7. How much does it cost to fix code P0746 on a 2014 Chevrolet Silverado?

Costs can range from $150 to $400 for solenoid replacement, but if internal transmission repairs are needed, costs could exceed $1,000.

8. Can dirty transmission fluid cause code P0746 in a 2014 Chevrolet Silverado?

Yes, dirty or contaminated transmission fluid can cause the solenoid to stick or malfunction, leading to this code.

9. How do I prevent code P0746 from occurring again in my 2014 Chevrolet Silverado?

Regularly check and replace the transmission fluid as needed, perform routine transmission maintenance, and address any warning signs promptly.

10. Is replacing the transmission control solenoid a DIY job for code P0746 on a 2014 Chevrolet Silverado?

It can be a DIY job for experienced mechanics, but it typically requires access to the transmission and specialized tools, so professional help is recommended for most drivers.

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