AutoCodes – GMC – P2727 2018 GMC Sierra

P2727 2018 GMC Sierra Code - Pressure Control Solenoid Valve 5 Circuit Open

Quick Answer

The pressure control solenoid 5 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: P2727 2018 GMC Sierra indicates Pressure Control Solenoid Valve 5 Circuit Open.
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 308

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 P2727 2018 GMC Sierra Description

The pressure control solenoid 5 is part of the control solenoid valve assembly which has no serviceable parts. The normally low-pressure control solenoid 5 regulates and directs oil pressure to the 1-2-3-4 clutch regulator valve and 1-2-3-4 clutch boost valve. Increasing pressure control solenoid 5 pressure increases pressure to the 1-2-3-4 clutch. The Transmission Control Module varies the current to the pressure control solenoid 5 through a low-side driver. Increasing the current to pressure control solenoid 5 increases oil pressure by closing OFF the solenoid exhaust port. Decreasing the current to pressure control solenoid 5 decreases oil pressure by opening the exhaust port. Pressure control solenoid 5 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.

OBDII Code P2727 2018 GMC Sierra - Pressure Control Solenoid Valve 5 Circuit Open - AutoCodes.com — P2727 2018 GMC Sierra Code - Pressure Control Solenoid Valve 5 Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2727 2018 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 P2727 2018 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 P2727 2018 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 P2727 2018 GMC Sierra code?

Need more information on how to fix the P2727 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2727 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P2727 2018 GMC Sierra Code

1. What does the OBDII code P2727 for a 2018 GMC Sierra mean?

The code P2727 indicates a potential issue with Pressure Control Solenoid Valve 5 Circuit Open in your 2018 GMC Sierra's transmission system.

2. What are the common symptoms of OBDII code P2727 in a 2018 GMC Sierra?

Common symptoms may include harsh shifting, transmission slippage, decreased fuel efficiency, and potentially the transmission going into limp mode.

3. What are the possible causes of the P2727 code in a 2018 GMC Sierra?

Causes can include a faulty pressure control solenoid valve, damaged wiring or connectors in the circuit, low transmission fluid levels, or a malfunctioning transmission control module.

4. How can I diagnose the P2727 code in my 2018 GMC Sierra?

Diagnosing the code typically involves using a scan tool to check for the specific code, inspecting the wiring and connectors, testing the solenoid valve, and ensuring proper transmission fluid levels.

5. Can I still drive my 2018 GMC Sierra with the P2727 code present?

It is not recommended to drive your vehicle with the P2727 code present, as it can potentially lead to further damage to the transmission if left unresolved.

6. How can I repair the Pressure Control Solenoid Valve 5 Circuit Open issue in my 2018 GMC Sierra?

Repair options may include replacing the pressure control solenoid valve, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the trouble codes.

7. Do I need a professional mechanic to fix the P2727 code in my 2018 GMC Sierra?

While some DIY enthusiasts may attempt the repairs, it is recommended to consult a professional mechanic with experience in transmission systems to accurately diagnose and resolve the issue.

8. Is the P2727 code a common issue in 2018 GMC Sierra vehicles?

While not extremely common, the P2727 code can occur in 2018 GMC Sierra vehicles due to various factors such as wear and tear, electrical issues, or component failures.

9. Can neglecting the P2727 code lead to more severe transmission problems in my 2018 GMC Sierra?

Ignoring the P2727 code can potentially lead to more severe transmission issues over time, such as complete transmission failure or increased repair costs.

10. How much should I expect to pay to repair the P2727 code in my 2018 GMC Sierra at a repair shop?

Repair costs for the P2727 code can vary depending on the exact cause of the issue, but you can expect to pay anywhere from $200 to $600 for parts and labor, possibly more if additional components need replacement.