AutoCodes – GMC – P2738 2016 GMC Sierra

P2738 2016 GMC Sierra Code - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage

Quick Answer

The Transmission Control Solenoid Valve Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve. 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: P2738 2016 GMC Sierra indicates Transmission Control Solenoid Valve 6 Control Circuit Low Voltage.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve.
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 149

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 P2738 2016 GMC Sierra Description

The Transmission Control Solenoid Valve Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the Transmission Control Solenoid Valve, which ultimately decreases line pressure. The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM). The Diagnostic Trouble Code (DTC) is set when the Transmission Control Solenoid Valve Control Circuit commanded state does not match the actual state for greater than 1 s.

OBDII Code P2738 2016 GMC Sierra - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage - AutoCodes.com — P2738 2016 GMC Sierra Code - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2738 2016 GMC Sierra?

Low transmission fluid level
Dirty transmission fluid
Faulty Transmission Control Solenoid Valve
Transmission Control Solenoid Valve harness is open or shorted
Transmission Control Solenoid Valve circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P2738 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 P2738 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 P2738 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 P2738 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P2738 on a 2016 GMC Sierra related to the Transmission Control Solenoid Valve 6 Control Circuit Low Voltage?

- Common symptoms include rough shifting, transmission slipping, and potential stalling of the vehicle.

2. What are the possible causes of OBDII code P2738 on a 2016 GMC Sierra?

- Possible causes include a faulty transmission control solenoid valve, damaged wiring or connectors, low transmission fluid levels, or a malfunctioning transmission control module.

3. How serious is OBDII code P2738 on a 2016 GMC Sierra?

- This code should be addressed promptly as it can lead to transmission issues and potential damage if left unresolved.

4. Can I continue to drive my 2016 GMC Sierra with OBDII code P2738 present?

- It is not recommended to continue driving the vehicle with this code present as it can cause further damage to the transmission.

5. How can I diagnose OBDII code P2738 on a 2016 GMC Sierra?

- Diagnosis usually involves using a scan tool to read the code, checking the transmission control solenoid valve and related components for faults, and inspecting the wiring for any damage.

6. What are some repair tips for fixing OBDII code P2738 on a 2016 GMC Sierra?

- Repair tips may include replacing the faulty transmission control solenoid valve, repairing or replacing damaged wiring, ensuring proper transmission fluid levels, and resetting the trouble code after repairs are made.

7. How much does it cost to repair OBDII code P2738 on a 2016 GMC Sierra?

- The cost of repairs can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can I clear OBDII code P2738 on a 2016 GMC Sierra without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear if the underlying issue is not addressed, and it is not recommended to ignore the problem.

9. Is it possible to prevent OBDII code P2738 from appearing on a 2016 GMC Sierra?

- Regular maintenance of the transmission system, such as checking fluid levels and addressing any issues promptly, can help prevent this code from appearing.

10. How long does it typically take to repair OBDII code P2738 on a 2016 GMC Sierra?

- The repair time can vary depending on the exact cause of the code and the complexity of the repair needed, but it may take a few hours to a full day to complete the necessary repairs.