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P2720 2014 GMC Sierra Code - Pressure Control Solenoid 4 Control Circuit Low Voltage

Quick Answer

The P2720 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Pressure Control Solenoid 4 Control Circuit experiencing low voltage. Common causes include Faulty pressure control solenoid 4, Wiring or connector issues in the control circuit, Low transmission fluid level or dirty transmission 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
P2720 2014 GMC Sierra indicates Pressure Control Solenoid 4 Control Circuit Low Voltage.
Common causes
Common causes include Faulty pressure control solenoid 4, Wiring or connector issues in the control circuit, Low transmission fluid level or dirty transmission 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 17, 2024
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Code P2720 2014 GMC Sierra Description

The P2720 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Pressure Control Solenoid 4 Control Circuit experiencing low voltage. The pressure control solenoid is a crucial component of the transmission system, responsible for regulating hydraulic pressure within the transmission. When the control circuit for solenoid 4 detects low voltage, it can lead to various transmission-related problems.

OBDII Code P2720 2014 GMC Sierra - Pressure Control Solenoid 4 Control Circuit Low Voltage
P2720 2014 GMC Sierra Code - Pressure Control Solenoid 4 Control Circuit Low Voltage

Common Causes of P2720 2014 GMC Sierra

  1. Faulty pressure control solenoid 4
  2. Wiring or connector issues in the control circuit
  3. Low transmission fluid level or dirty transmission fluid
  4. Malfunctioning transmission control module (TCM)
  5. Electrical issues such as a blown fuse or relay related to the solenoid circuit

Symptoms of P2720 2014 GMC Sierra

  1. Erratic or harsh shifting
  2. Delayed shifting
  3. Transmission slippage
  4. Transmission overheating
  5. Illumination of the Check Engine Light

How to Fix P2720 2014 GMC Sierra

  1. Begin by conducting a thorough inspection of the pressure control solenoid 4, wiring, and connectors to identify any visible damage or corrosion.
  2. Check the transmission fluid level and condition, ensuring it is at the correct level and not contaminated.
  3. Test the pressure control solenoid 4 using a multimeter to determine if it is functioning within specifications.
  4. Inspect the TCM for any signs of damage or malfunction, and perform any necessary repairs or replacements.
  5. Clear the DTC using a scan tool after completing the repairs and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2720 2014 GMC Sierra

The typical repair costs for addressing a P2720 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. Generally, the cost of replacing a pressure control solenoid can range from $150 to $300, while addressing wiring or connector issues may cost between $100 to $200. If the problem is related to the TCM, the cost can be higher, potentially ranging from $300 to $800. Labor costs can add to the overall expense, with rates typically ranging from $80 to $150 per hour. It's advisable to consult with a trusted mechanic or repair shop to obtain a more accurate estimate based on the specific circumstances of the vehicle.

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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 P2720 2014 GMC Sierra Code

1. What does the OBDII code P2720 mean on a 2014 GMC Sierra?

P2720 indicates a "Pressure Control Solenoid 4 Control Circuit Low Voltage," meaning the transmission's solenoid is not receiving the correct electrical voltage to control hydraulic pressure properly.

2. What are the common symptoms of the P2720 code?

Symptoms may include harsh or delayed shifting, slipping gears, transmission overheating, poor fuel economy, or the check engine light turning on.

3. What causes the P2720 code on a 2014 GMC Sierra?

Common causes include a faulty pressure control solenoid, damaged wiring or connectors in the solenoid circuit, low transmission fluid, or issues with the transmission control module (TCM).

4. Can low transmission fluid trigger the P2720 code?

Yes, low or contaminated transmission fluid can cause hydraulic pressure issues, potentially triggering the P2720 code.

5. How can I diagnose the P2720 code on my GMC Sierra?

Start by checking the transmission fluid level and condition, inspecting the wiring and connectors to the solenoid, and performing an electrical test on the pressure control solenoid and related circuits.

6. Is the P2720 code serious?

Yes, it can lead to transmission damage if not addressed promptly. Driving with this code can also result in poor performance and unsafe driving conditions.

7. How do I fix the P2720 code on a 2014 GMC Sierra?

Repairs may involve replacing the pressure control solenoid, repairing or replacing damaged wiring or connectors, refilling or flushing transmission fluid, or reprogramming the TCM.

8. How much does it cost to fix the P2720 code?

The repair cost varies depending on the issue. Replacing a solenoid typically ranges from $150 to $400, while wiring repairs or TCM replacement could be more expensive.

9. Do I need to replace the transmission for the P2720 code?

Not necessarily. The issue is often localized to the solenoid, wiring, or fluid. However, prolonged neglect could cause extensive transmission damage requiring a rebuild or replacement.

10. Can I fix the P2720 code myself?

If you’re experienced with automotive repairs, you may handle basic tasks like checking fluid or inspecting wiring. However, diagnosing and replacing solenoids or addressing electrical issues may require professional expertise.

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