AutoCodes – GMC – P2729 2016 GMC Sierra

P2729 2016 GMC Sierra Code - Pressure Control Solenoid Valve 5 Control Circuit Low Voltage

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: P2729 2016 GMC Sierra indicates Pressure Control Solenoid Valve 5 Control Circuit Low Voltage.
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 175

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 P2729 2016 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 a short to ground on the clutch pressure control solenoid valve 5 control circuit for 1 s.

OBDII Code P2729 2016 GMC Sierra - Pressure Control Solenoid Valve 5 Control Circuit Low Voltage - AutoCodes.com — P2729 2016 GMC Sierra Code - Pressure Control Solenoid Valve 5 Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2729 2016 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 P2729 2016 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 P2729 2016 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 P2729 2016 GMC Sierra 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 P2729 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P2729 in a 2016 GMC Sierra?

The common symptoms of P2729 include rough shifting, transmission slipping, decreased fuel efficiency, and the Check Engine light illuminating on the dashboard.

2. What does the OBDII code P2729 Pressure Control Solenoid Valve 5 Control Circuit Low Voltage mean?

P2729 indicates that there is a low voltage condition in the control circuit of Pressure Control Solenoid Valve 5 in the transmission system of the vehicle.

3. What are the possible causes of OBDII code P2729 in a 2016 GMC Sierra?

Possible causes of P2729 include a faulty pressure control solenoid valve, damaged wiring or connectors in the control circuit, low transmission fluid levels, or a malfunctioning transmission control module.

4. How can I diagnose the OBDII code P2729 in my 2016 GMC Sierra?

Diagnosing P2729 typically involves using an OBDII scanner to retrieve the trouble code, inspecting the transmission fluid level and condition, checking the wiring and connectors related to the solenoid valve, and testing the solenoid valve itself for proper operation.

5. Can I continue driving my 2016 GMC Sierra with OBDII code P2729 present?

It is not recommended to continue driving with P2729 as it can lead to further damage to the transmission system. It is best to have the issue diagnosed and repaired as soon as possible.

6. How can I repair OBDII code P2729 in my 2016 GMC Sierra?

Repairing P2729 may involve replacing the faulty pressure control solenoid valve, repairing or replacing damaged wiring or connectors, ensuring the transmission fluid is at the correct level, and resetting the trouble code with an OBDII scanner.

7. Is it possible to clear the OBDII code P2729 in a 2016 GMC Sierra without fixing the issue?

Clearing the code without addressing the underlying problem may temporarily turn off the Check Engine light, but the issue causing P2729 will persist, potentially leading to more severe transmission problems in the future.

8. How much does it typically cost to repair OBDII code P2729 in a 2016 GMC Sierra?

The cost of repairing P2729 can vary depending on the exact cause of the issue, the extent of the repair needed, and labor rates in your area. It's advisable to consult with a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P2729 in a 2016 GMC Sierra?

While some aspects of diagnosing and repairing P2729 can be tackled by a knowledgeable DIY enthusiast with the right tools and experience, dealing with transmission-related issues may require specialized skills and equipment best handled by a professional mechanic.

10. How can I prevent OBDII code P2729 from occurring in my 2016 GMC Sierra in the future?

To prevent P2729 and other transmission-related issues, it's essential to perform regular maintenance on your vehicle, including checking and changing transmission fluid as recommended, addressing any leaks promptly, and driving responsibly to reduce strain on the transmission system.