AutoCodesGMC – P2718 2015 GMC Sierra

P2718 2015 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 2015 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 223
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
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Code P2718 2015 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 2015 GMC Sierra - Pressure Control Solenoid 4 Control Circuit Open - AutoCodes.com
P2718 2015 GMC Sierra Code - Pressure Control Solenoid 4 Control Circuit Open

What are the Possible Causes of the DTC P2718 2015 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 2015 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 2015 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 2015 GMC Sierra code?

Need more information on how to fix the P2718 2015 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 2015 GMC Sierra Code

1. What does the OBDII code P2718 mean on a 2015 GMC Sierra?

Code P2718 indicates an issue with the Pressure Control Solenoid 4 Control Circuit, specifically that the circuit is open or not functioning properly.

2. What are the common symptoms of a P2718 code in a 2015 GMC Sierra?

Symptoms may include harsh or delayed shifting, transmission slipping, poor acceleration, erratic gear changes, and the illumination of the check engine light.

3. What causes the P2718 code to appear on a 2015 GMC Sierra?

Common causes include a faulty pressure control solenoid, damaged or corroded wiring in the control circuit, a malfunctioning transmission control module (TCM), or low transmission fluid levels.

4. Can I drive my 2015 GMC Sierra with a P2718 code?

While the vehicle may still be drivable, continuing to drive with this code can cause further damage to the transmission. It’s best to address the issue promptly.

5. How do I diagnose a P2718 code on a 2015 GMC Sierra?

Diagnosis typically involves checking the transmission fluid level and condition, inspecting the wiring and connectors for damage, testing the pressure control solenoid, and using a scan tool to verify the fault.

6. How can I fix the P2718 code on my 2015 GMC Sierra?

Repairs may include replacing the faulty pressure control solenoid, repairing or replacing damaged wiring or connectors, updating or reprogramming the TCM, or servicing the transmission fluid.

7. How much does it cost to fix a P2718 code on a 2015 GMC Sierra?

Repair costs vary depending on the cause but typically range from $150 to $500 for parts and labor, with solenoid replacement being a common expense.

8. Can low transmission fluid cause a P2718 code on a 2015 GMC Sierra?

Yes, low or contaminated transmission fluid can lead to improper solenoid operation and trigger the P2718 code.

9. Does the P2718 code mean my 2015 GMC Sierra needs a new transmission?

Not necessarily. The issue is often related to the solenoid or wiring and can usually be repaired without replacing the entire transmission.

10. Will clearing the P2718 code fix the problem on my 2015 GMC Sierra?

Clearing the code may turn off the check engine light temporarily, but the underlying issue must be resolved to prevent the code from returning.

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