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P0747 2015 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck On

Quick Answer

The P0747 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates a problem with the Transmission Control Solenoid Valve 1 being stuck on. Common causes include Faulty Transmission Control Solenoid Valve 1, Electrical issues such as a short circuit or wiring damage, Low transmission fluid levels or dirty fluid. 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 2015 Chevrolet Silverado indicates Transmission Control Solenoid Valve 1 Stuck On.
Common causes
Common causes include Faulty Transmission Control Solenoid Valve 1, Electrical issues such as a short circuit or wiring damage, Low transmission fluid levels or dirty fluid.
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 16, 2024
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Code P0747 2015 Chevrolet Silverado Description

The P0747 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates a problem with the Transmission Control Solenoid Valve 1 being stuck on. This solenoid valve plays a crucial role in controlling the flow of transmission fluid within the transmission system. When the solenoid valve is stuck in the open position, it can lead to various issues with the transmission's operation.

OBDII Code P0747 2015 Chevrolet Silverado - Transmission Control Solenoid Valve 1 Stuck On
P0747 2015 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Stuck On

Common Causes of P0747 2015 Chevrolet Silverado

  1. Faulty Transmission Control Solenoid Valve 1
  2. Electrical issues such as a short circuit or wiring damage
  3. Low transmission fluid levels or dirty fluid
  4. Mechanical blockages within the transmission system
  5. Software or programming issues with the transmission control module

Symptoms of P0747 2015 Chevrolet Silverado

  1. Delayed or erratic shifting
  2. Slipping gears
  3. Harsh or rough shifting
  4. Decreased fuel efficiency
  5. Illumination of the check engine light

How to Fix P0747 2015 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the issue, such as testing the Transmission Control Solenoid Valve 1 for proper operation.
  2. Inspect the transmission fluid level and condition, topping off or replacing the fluid if necessary.
  3. Check for any electrical faults or wiring issues that may be affecting the solenoid valve's operation.
  4. If the solenoid valve is found to be faulty, replace it with a new one and ensure proper installation.
  5. Clear the DTC from the vehicle's computer system and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P0747 2015 Chevrolet Silverado

The cost of repairing a P0747 code on a 2015 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates in your area. Generally, replacing a Transmission Control Solenoid Valve 1 can cost between $150 to $300 for the part alone. Labor costs can range from $100 to $300, with total repair costs typically falling between $250 to $600. It is advisable to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on your vehicle's specific needs and location. Labor rates at auto repair shops can vary, so it's recommended to inquire about rates before proceeding with the repair.

What does this mean?

Tech Notes for P0747 2015 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 2015 Chevrolet Silverado Code

1. What does the OBDII code P0747 mean on a 2015 Chevrolet Silverado?

P0747 indicates that Transmission Control Solenoid Valve 1 is stuck in the "on" position, preventing proper control of hydraulic pressure in the transmission.

2. What are the common symptoms of code P0747 in a 2015 Chevrolet Silverado?

Symptoms may include harsh shifting, failure to shift gears, transmission slipping, decreased fuel efficiency, or the vehicle going into limp mode.

3. What causes the P0747 code to appear on a 2015 Chevrolet Silverado?

Potential causes include a malfunctioning transmission control solenoid, low or dirty transmission fluid, a clogged transmission filter, internal transmission issues, or damaged wiring to the solenoid.

4. Can driving with the P0747 code damage my 2015 Chevrolet Silverado?

Yes, driving with this code can cause further damage to the transmission if not addressed promptly, as the solenoid's failure can prevent proper transmission operation.

5. How do I diagnose the P0747 code on a 2015 Chevrolet Silverado?

Diagnosis involves checking the transmission fluid level and condition, inspecting wiring and connectors for damage, testing the operation of the transmission control solenoid, and scanning for related codes.

6. How can I fix the P0747 code on my 2015 Chevrolet Silverado?

Repairs may include replacing the faulty solenoid, flushing and replacing the transmission fluid, cleaning or replacing the transmission filter, or repairing damaged wiring or connectors.

7. How much does it cost to repair the P0747 code on a 2015 Chevrolet Silverado?

Repair costs vary depending on the issue, but replacing a transmission control solenoid typically costs between $200 and $500, while a full transmission repair could cost significantly more.

8. Can low transmission fluid cause the P0747 code in a 2015 Chevrolet Silverado?

Yes, low or dirty transmission fluid can cause the solenoid to malfunction, leading to the P0747 code.

9. Will clearing the P0747 code fix the problem in my 2015 Chevrolet Silverado?

Clearing the code will only temporarily remove it from the system; the underlying issue must be repaired to prevent the code from returning.

10. Is it safe to drive my 2015 Chevrolet Silverado with the P0747 code?

It’s not recommended to drive with this code active, as it can lead to further transmission damage and unsafe driving conditions.

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