AutoCodes – GMC – P2718 2018 GMC Sierra

P2718 2018 GMC Sierra 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 2018 GMC Sierra 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 228

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 2018 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.

OBDII Code P2718 2018 GMC Sierra - Pressure Control Solenoid 4 Control Circuit Open - AutoCodes.com — P2718 2018 GMC Sierra Code - Pressure Control Solenoid 4 Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2718 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 P2718 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 P2718 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 P2718 2018 GMC Sierra code?

Need more information on how to fix the P2718 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 P2718 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P2718 in a 2018 GMC Sierra?

Symptoms may include harsh shifting, transmission slipping, decreased fuel efficiency, and the Check Engine light illuminating on the dashboard.

2. What does the OBDII code P2718 for a 2018 GMC Sierra indicate?

This code specifically points to an issue with the Pressure Control Solenoid 4 Control Circuit being open, which can affect the performance of the transmission.

3. What are the possible causes of the Pressure Control Solenoid 4 Control Circuit Open code in a 2018 GMC Sierra?

Potential causes may include a faulty pressure control solenoid, damaged wiring or connectors, low transmission fluid level, or internal transmission issues.

4. How can I diagnose the cause of OBDII code P2718 in my 2018 GMC Sierra?

Diagnosis typically involves checking the transmission fluid level, inspecting the wiring and connectors related to the pressure control solenoid, and performing electronic tests using a diagnostic scanner.

5. Can I continue driving my 2018 GMC Sierra with OBDII code P2718 present?

It is not recommended to continue driving with this code active, as it can lead to further transmission damage and potential safety risks. It is best to address the issue promptly.

6. What are the repair options for fixing OBDII code P2718 in a 2018 GMC Sierra?

Repairs may involve replacing the pressure control solenoid, repairing damaged wiring or connectors, ensuring the transmission fluid is at the correct level, or addressing any internal transmission problems.

7. How much does it typically cost to repair OBDII code P2718 in a 2018 GMC Sierra?

The cost of repairs can vary depending on the underlying cause of the code, the labor rates in your area, and whether you choose to address the issue yourself or take it to a professional mechanic.

8. Can I reset the OBDII code P2718 in my 2018 GMC Sierra myself?

You can clear the code using an OBDII scanner, but it is important to address the root cause of the issue first to prevent the code from reoccurring.

9. Will OBDII code P2718 cause permanent damage to the transmission of a 2018 GMC Sierra?

Continued driving with this code present can potentially cause damage to the transmission over time, so it is advisable to address the issue promptly to prevent further harm.

10. Is it common for the Pressure Control Solenoid 4 Control Circuit Open code to recur in a 2018 GMC Sierra after repairs?

If the root cause of the issue is not properly addressed during repairs, there is a possibility that the code may reappear. Ensuring thorough diagnosis and repair procedures can help prevent recurrence.