AutoCodes – GMC – P2720 2014 GMC Sierra

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

Quick Answer

The pressure control solenoid 4 is part of the control solenoid valve assembly which has no serviceable parts. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Control Solenoid Valve Assembly. 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 Low transmission fluid level, Dirty transmission fluid, Faulty Control Solenoid Valve Assembly.
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.

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Code Popularity 184

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2720 2014 GMC Sierra Description

The pressure control solenoid 4 is part of the control solenoid valve assembly which has no serviceable parts. The normally low-pressure control solenoid 4 regulates and directs oil pressure to the 2-6 clutch regulator valve. Increasing pressure control solenoid 4 pressure increases pressure to the 2-6 clutch regulator valve. The Transmission Control Module (TCM) varies the current to the pressure control solenoid 4 through a low-side driver. Increasing the current to pressure control solenoid 4 increases oil pressure by closing OFF the solenoid exhaust port. Decreasing the current to pressure control solenoid 4 decreases oil pressure by opening the exhaust port. Pressure control solenoid 4 power is supplied by the Transmission Control Module through a high side driver. The high-side driver protects the circuit and components from excessive current flow. If excessive current flow is detected, the high side driver will turn OFF. When the fault is corrected the high-side driver will reset.
The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Module detects a short to ground on the pressure control solenoid 4 control circuit for 1 s.

OBDII Code P2720 2014 GMC Sierra - Pressure Control Solenoid 4 Control Circuit Low Voltage - AutoCodes.com — P2720 2014 GMC Sierra Code - Pressure Control Solenoid 4 Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2720 2014 GMC Sierra?

Low transmission fluid level
Dirty transmission fluid
Faulty Control Solenoid Valve Assembly
Control Solenoid Valve Assembly harness or connectors
Control Solenoid Valve Assembly circuit is open or shorted

How to Fix the DTC P2720 2014 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2720 2014 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2720 2014 GMC Sierra code?

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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 youâ€™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.