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P2739 GMC Code - Transmission Control Solenoid Valve 6 Control Circuit High Voltage

Quick Answer

The P2739 GMC code indicates a problem with the Transmission Control Solenoid Valve 6 Control Circuit High Voltage. Common causes include Faulty Transmission Control Solenoid Valve 6, Damaged wiring or connectors in the control circuit, Malfunctioning Transmission Control Module (TCM). 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 GMC indicates Transmission Control Solenoid Valve 6 Control Circuit High Voltage.
Common causes
Common causes include Faulty Transmission Control Solenoid Valve 6, Damaged wiring or connectors in the control circuit, Malfunctioning Transmission Control Module (TCM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2739 GMC Description

The P2739 GMC code indicates a problem with the Transmission Control Solenoid Valve 6 Control Circuit High Voltage. In an automatic transmission system, solenoid valves play a crucial role in controlling the flow of transmission fluid to various components. Solenoid Valve 6 specifically regulates the transmission fluid flow in a specific gear, and if the control circuit is reporting high voltage, it means that the solenoid is receiving more power than it should, potentially leading to erratic behavior in gear shifting.

OBDII Code P2739 GMC - Transmission Control Solenoid Valve 6 Control Circuit High Voltage
P2739 GMC Code - Transmission Control Solenoid Valve 6 Control Circuit High Voltage

Common Causes of P2739 GMC

  1. Faulty Transmission Control Solenoid Valve 6
  2. Damaged wiring or connectors in the control circuit
  3. Malfunctioning Transmission Control Module (TCM)
  4. Issues with the vehicle's battery or voltage supply
  5. Corrosion or debris affecting the solenoid valve operation

Symptoms of P2739 GMC

  1. Harsh or delayed shifting
  2. Slipping gears
  3. Poor fuel economy
  4. Transmission overheating
  5. Limp mode activation

How to Fix P2739 GMC

  1. Begin by performing a thorough inspection of the Transmission Control Solenoid Valve 6, wiring, and connectors to identify any visible damage or corrosion.
  2. Test the solenoid valve using a multimeter to check for proper resistance values and functionality.
  3. Check the Transmission Control Module (TCM) for any fault codes and ensure it is properly communicating with the solenoid valve.
  4. Replace the faulty Transmission Control Solenoid Valve 6 if necessary and repair any damaged wiring or connectors.
  5. Clear the trouble codes from the vehicle's computer system and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P2739 GMC

The typical repair costs for addressing the Transmission Control Solenoid Valve 6 Control Circuit High Voltage issue can range from $200 to $500, including parts and labor. However, it's essential to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, and lower at independent shops. It's recommended to obtain local estimates for a more accurate cost assessment.

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Information for Specific GMC Models

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.

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