AutoCodes – GMC – P2718 GMC

P2718 GMC Code - Pressure Control Solenoid 4 Control Circuit Open

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: P2718 GMC indicates Pressure Control Solenoid 4 Control 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 633

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 P2718 GMC 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.

OBDII Code P2718 GMC - Pressure Control Solenoid 4 Control Circuit Open - AutoCodes.com — P2718 GMC Code - Pressure Control Solenoid 4 Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2718 GMC?

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 P2718 GMC?

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 P2718 GMC 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 P2718 GMC code?

Need more information on how to fix the P2718 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2718 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P2718 2014 GMC Sierra — Pressure Control Solenoid 4 Control Circuit Open
P2718 2015 GMC Sierra — Pressure Control Solenoid 4 Control Circuit Open
P2718 2016 GMC Sierra — Pressure Control Solenoid 4 Control Circuit Open
P2718 2017 GMC Sierra — Pressure Control Solenoid 4 Control Circuit Open
P2718 2018 GMC Sierra — Pressure Control Solenoid 4 Control Circuit Open

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 P2718 GMC Code

1. What are the common symptoms of OBDII code P2718 GMC?

The common symptoms of code P2718 include harsh shifting, delayed shifting, transmission slipping, and the transmission going into limp mode.

2. What causes the OBDII code P2718 GMC to appear?

The code P2718 is typically triggered by a malfunction in the Pressure Control Solenoid 4 circuit, often due to a faulty solenoid, wiring issues, or a failed transmission control module.

3. How serious is the OBDII code P2718 GMC?

Code P2718 can lead to drivability issues and potential transmission damage if left unaddressed. It is recommended to address this code promptly to prevent further damage.

4. Can I drive my vehicle with the OBDII code P2718 GMC?

It is not recommended to drive the vehicle with code P2718 present, as it can cause further damage to the transmission. It is best to address the issue as soon as possible.

5. How do I diagnose the OBDII code P2718 GMC?

Diagnosing code P2718 typically involves using a scan tool to retrieve the code, checking the wiring and connections related to the Pressure Control Solenoid 4, and testing the solenoid for proper operation.

6. How can I repair the OBDII code P2718 GMC?

Repairing code P2718 may involve replacing the Pressure Control Solenoid 4, repairing any damaged wiring or connections, or reprogramming the transmission control module.

7. Can a DIYer fix the OBDII code P2718 GMC?

While some DIYers may be able to address code P2718 with the right tools and knowledge, it is recommended to consult a professional mechanic for an accurate diagnosis and repair.

8. How much does it cost to fix the OBDII code P2718 GMC?

The cost of fixing code P2718 can vary depending on the cause of the issue, the necessary repairs, and the labor rates in your area. It is advisable to obtain quotes from different mechanics.

9. Will resetting the OBDII code P2718 GMC make it go away?

Resetting the code may temporarily clear the check engine light, but if the underlying issue causing code P2718 is not addressed, the code is likely to return.

10. How can I prevent the OBDII code P2718 GMC from reappearing?

Regular maintenance of the transmission, such as fluid changes and inspections, can help prevent issues that may trigger code P2718. Addressing any transmission problems promptly can also help prevent the code from reappearing.