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P0747 2016 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck On

Quick Answer

The P0747 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the Transmission Control Solenoid Valve 1 being stuck on. Common causes include Malfunctioning transmission control solenoid valve, Wiring issues or shorts in the electrical circuit, Faulty 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
P0747 2016 Chevrolet Silverado indicates Transmission Control Solenoid Valve 1 Stuck On.
Common causes
Common causes include Malfunctioning transmission control solenoid valve, Wiring issues or shorts in the electrical circuit, Faulty 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 15, 2024
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Code P0747 2016 Chevrolet Silverado Description

The P0747 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the Transmission Control Solenoid Valve 1 being stuck on. The transmission control solenoid valve is a crucial component of the vehicle's transmission system, responsible for regulating the flow of transmission fluid to control gear shifting. When this solenoid valve becomes stuck in the on position, it can lead to various issues with the transmission's operation.

OBDII Code P0747 2016 Chevrolet Silverado - Transmission Control Solenoid Valve 1 Stuck On
P0747 2016 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck On

Common Causes of P0747 2016 Chevrolet Silverado

  1. Malfunctioning transmission control solenoid valve
  2. Wiring issues or shorts in the electrical circuit
  3. Faulty transmission control module
  4. Low transmission fluid levels
  5. Contaminated or degraded transmission fluid

Symptoms of P0747 2016 Chevrolet Silverado

  1. Erratic shifting behavior
  2. Harsh shifting
  3. Delayed shifting
  4. Transmission slipping
  5. Limp mode activation

How to Fix P0747 2016 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the issue using a scan tool to confirm the P0747 code and conducting further testing to pinpoint the exact problem.
  2. Inspect the transmission control solenoid valve for any signs of damage or sticking. Replace the solenoid valve if necessary.
  3. Check the wiring harness and connectors for any damage, corrosion, or loose connections. Repair or replace as needed.
  4. Inspect the transmission fluid level and condition. Top off or replace the fluid if it is low or contaminated.
  5. Clear the DTC from the vehicle's computer memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0747 2016 Chevrolet Silverado

The typical repair costs for addressing a P0747 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the cost of replacing a transmission control solenoid valve can range from $150 to $300, including parts and labor. However, additional costs may apply if other components need to be replaced or if further diagnostics are required. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. 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 P0747 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.

Frequently Asked Questions about P0747 2016 Chevrolet Silverado Code

What does the OBDII code P0747 mean for a 2016 Chevrolet Silverado?

Code P0747 indicates that Transmission Control Solenoid Valve 1 is stuck in the "on" position, which affects the transmission's ability to shift properly.

What are the symptoms of code P0747 in a 2016 Chevrolet Silverado?

Symptoms may include erratic shifting, failure to shift gears, transmission slipping, reduced fuel efficiency, or the vehicle entering "limp mode."

What causes the P0747 code in a 2016 Chevrolet Silverado?

Common causes include a faulty transmission control solenoid, contaminated transmission fluid, wiring issues, or a malfunctioning transmission control module (TCM).

Can driving with code P0747 damage the transmission?

Yes, driving with this code can cause additional damage to the transmission if the issue is not resolved promptly.

How is code P0747 diagnosed in a 2016 Chevrolet Silverado?

A mechanic will use a scan tool to confirm the code, inspect the transmission fluid condition, check solenoid operation, and test wiring and electrical connections.

How do you fix code P0747 in a 2016 Chevrolet Silverado?

Repairs may involve replacing the faulty solenoid, cleaning or replacing the transmission fluid, repairing damaged wiring, or replacing the TCM if necessary.

How much does it cost to repair code P0747 in a 2016 Chevrolet Silverado?

Repair costs vary but may range from $200 to $500 for solenoid replacement, with higher costs if more extensive transmission repairs are needed.

Can low transmission fluid cause code P0747?

Yes, low or dirty transmission fluid can restrict solenoid operation and trigger this code.

Is replacing the transmission control solenoid difficult in a 2016 Chevrolet Silverado?

Replacing the solenoid can be moderately difficult and typically requires removing the transmission pan and valve body, which is best handled by a professional.

Should I reset the P0747 code after repairs?

Yes, after resolving the issue, reset the code using a scan tool to verify that the problem has been fixed and does not reoccur.

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