AutoCodesChevrolet – P2739 2018 Chevrolet Silverado

P2739 2018 Chevrolet Silverado Code - Transmission Control Solenoid Valve 6 Control Circuit High 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
P2739 2018 Chevrolet Silverado indicates Transmission Control Solenoid Valve 6 Control Circuit High 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 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 P2739 2018 Chevrolet Silverado 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 P2739 2018 Chevrolet Silverado - Transmission Control Solenoid Valve 6 Control Circuit High Voltage - AutoCodes.com
P2739 2018 Chevrolet Silverado Code - Transmission Control Solenoid Valve 6 Control Circuit High Voltage

What are the Possible Causes of the DTC P2739 2018 Chevrolet Silverado?

  • 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 P2739 2018 Chevrolet Silverado?

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 P2739 2018 Chevrolet Silverado 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 P2739 2018 Chevrolet Silverado 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 P2739 2018 Chevrolet Silverado Code

1. What does the OBDII code P2739 mean on a 2018 Chevrolet Silverado?

P2739 indicates a high voltage issue in the control circuit of Transmission Control Solenoid Valve 6, which is responsible for regulating hydraulic pressure in the transmission.

2. What are the symptoms of code P2739 in a 2018 Chevrolet Silverado?

Common symptoms include harsh or delayed shifting, slipping gears, transmission overheating, or the vehicle entering limp mode.

3. What causes the P2739 code to appear?

Causes may include a faulty transmission control solenoid, damaged wiring or connectors in the circuit, a failed powertrain control module (PCM), or low transmission fluid.

4. Can I drive my 2018 Chevrolet Silverado with code P2739?

Driving with this code is not recommended, as it may lead to further transmission damage or unsafe driving conditions due to poor shifting performance.

5. How do I diagnose the P2739 code on my Silverado?

Start by inspecting the wiring and connectors for damage or corrosion, checking the solenoid's resistance, and verifying the transmission fluid level and condition.

6. How do I fix the P2739 code on a 2018 Chevrolet Silverado?

Repairs may involve replacing the faulty solenoid, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming or replacing the PCM.

7. What tools do I need to troubleshoot the P2739 code?

You’ll need an OBDII scanner, a multimeter to test electrical circuits, and possibly a transmission pressure gauge for further diagnosis.

8. How much does it cost to fix the P2739 code on a Silverado?

Repair costs can range from $150 to $500 or more, depending on whether the issue is with the solenoid, wiring, or PCM.

9. Can a low transmission fluid level cause the P2739 code?

Yes, low or dirty transmission fluid can affect the solenoid's operation and lead to this code.

10. Do I need to reset the code after fixing the issue?

Yes, after completing repairs, use an OBDII scanner to clear the code and verify that it does not return.

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