AutoCodes – GMC – P2729 2017 GMC Sierra

P2729 2017 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 2017 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 218

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

OBDII Code P2729 2017 GMC Sierra - Pressure Control Solenoid Valve 5 Control Circuit Low Voltage - AutoCodes.com — P2729 2017 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 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 P2729 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 P2729 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 P2729 2017 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 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P2729 in a 2017 GMC Sierra?

The common symptoms of OBDII code P2729 (Pressure Control Solenoid Valve 5 Control Circuit Low Voltage) in a 2017 GMC Sierra may include rough shifting, transmission slipping, and a decrease in fuel efficiency.

2. What are the possible causes of OBDII code P2729 in a 2017 GMC Sierra?

Possible causes of OBDII code P2729 in a 2017 GMC Sierra include a faulty pressure control solenoid valve, wiring issues, low transmission fluid levels, or a damaged transmission control module.

3. How serious is OBDII code P2729 in a 2017 GMC Sierra?

OBDII code P2729 can affect the performance and drivability of your 2017 GMC Sierra. It is important to address this issue promptly to prevent further damage to the transmission system.

4. Can I continue driving my 2017 GMC Sierra with OBDII code P2729?

It is not recommended to continue driving your 2017 GMC Sierra with OBDII code P2729. Continuing to drive with this code present could lead to more severe transmission issues and potentially costly repairs.

5. How can I diagnose OBDII code P2729 in my 2017 GMC Sierra?

Diagnosing OBDII code P2729 in your 2017 GMC Sierra involves using an OBDII scanner to retrieve the specific fault code, conducting a visual inspection of the transmission system, and testing the pressure control solenoid valve and associated wiring.

6. What are some repair tips for fixing OBDII code P2729 in a 2017 GMC Sierra?

Repair tips for fixing OBDII code P2729 in a 2017 GMC Sierra include checking and repairing any damaged wiring, replacing the pressure control solenoid valve if faulty, ensuring proper transmission fluid levels, and clearing the trouble code after repairs are completed.

7. Can a DIY enthusiast fix OBDII code P2729 in a 2017 GMC Sierra?

While some DIY enthusiasts may have the skills to address OBDII code P2729 in a 2017 GMC Sierra, it is recommended to consult a professional mechanic for accurate diagnosis and proper repairs to ensure the issue is resolved correctly.

8. How much does it typically cost to repair OBDII code P2729 in a 2017 GMC Sierra?

The cost to repair OBDII code P2729 in a 2017 GMC Sierra can vary depending on the specific cause of the issue, parts needed for replacement, and labor costs. It is advisable to obtain quotes from different repair shops for an accurate estimate.

9. Will resetting the OBDII code P2729 in a 2017 GMC Sierra make it go away permanently?

Resetting the OBDII code P2729 in a 2017 GMC Sierra without addressing the underlying issue will not make it go away permanently. The root cause of the problem needs to be identified and fixed to prevent the code from reoccurring.

10. How long does it take to repair OBDII code P2729 in a 2017 GMC Sierra?

The time it takes to repair OBDII code P2729 in a 2017 GMC Sierra can vary depending on the extent of the issue, availability of parts, and the mechanic's expertise. In general, it may take a few hours to a full day for diagnosis and repairs to be completed.