AutoCodes – GMC – P2728 2017 GMC Sierra

P2728 2017 GMC Sierra Code - Pressure Control Solenoid Valve Performance

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: P2728 2017 GMC Sierra indicates Pressure Control Solenoid Valve Performance.
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 200

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 P2728 2017 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.
The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Module detects an internal electrical performance malfunction of the clutch pressure control solenoid valve 5 control circuit where the measured clutch pressure control solenoid valve 5 current does not equal the commanded clutch pressure control solenoid valve 5 current for 5 s.

OBDII Code P2728 2017 GMC Sierra - Pressure Control Solenoid Valve Performance - AutoCodes.com — P2728 2017 GMC Sierra Code - Pressure Control Solenoid Valve Performance

What does this mean?

What are the Possible Causes of the DTC P2728 2017 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 P2728 2017 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 P2728 2017 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 P2728 2017 GMC Sierra code?

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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 P2728 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P2728 in a 2017 GMC Sierra?

The common symptoms of OBDII code P2728 in a 2017 GMC Sierra include rough shifting, transmission slipping, and difficulty engaging gears.

2. What does the OBDII code P2728 indicate on a 2017 GMC Sierra?

OBDII code P2728 on a 2017 GMC Sierra indicates a performance issue with the Pressure Control Solenoid Valve in the transmission.

3. What are the possible causes of OBDII code P2728 in a 2017 GMC Sierra?

Possible causes of OBDII code P2728 in a 2017 GMC Sierra include a faulty pressure control solenoid valve, low transmission fluid, electrical issues, or a malfunctioning transmission control module.

4. How can I diagnose the Pressure Control Solenoid Valve performance issue in my 2017 GMC Sierra?

Diagnosing the Pressure Control Solenoid Valve performance issue in a 2017 GMC Sierra involves checking the transmission fluid level and condition, inspecting the wiring and connections to the solenoid valve, and conducting a scan tool test to monitor valve operation.

5. Can I continue driving my 2017 GMC Sierra with OBDII code P2728?

It is not recommended to continue driving your 2017 GMC Sierra with OBDII code P2728, as it can lead to further transmission damage and potentially unsafe driving conditions.

6. How can I repair OBDII code P2728 on my 2017 GMC Sierra?

Repairing OBDII code P2728 on a 2017 GMC Sierra may involve replacing the pressure control solenoid valve, addressing any transmission fluid issues, repairing electrical connections, or reprogramming the transmission control module.

7. Is it possible to reset OBDII code P2728 in a 2017 GMC Sierra without fixing the underlying issue?

Resetting OBDII code P2728 in a 2017 GMC Sierra without fixing the underlying issue will only temporarily clear the code. The issue will likely resurface if not properly addressed.

8. How much does it typically cost to fix OBDII code P2728 on a 2017 GMC Sierra?

The cost to fix OBDII code P2728 on a 2017 GMC Sierra can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars for parts and labor.

9. Can a DIY enthusiast repair OBDII code P2728 in a 2017 GMC Sierra?

While some individuals with mechanical experience may be able to diagnose and repair OBDII code P2728 in a 2017 GMC Sierra, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved correctly.

10. How long does it take to repair OBDII code P2728 on a 2017 GMC Sierra?

The time it takes to repair OBDII code P2728 on a 2017 GMC Sierra can vary depending on the specific issue and the expertise of the mechanic. It may take a few hours to a full day to complete the repair.