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

Quick Answer

The P2738 GMC code indicates a problem with the transmission control solenoid valve 6 control circuit, specifically a low voltage condition. Common causes include Faulty transmission control solenoid valve 6, Damaged wiring or connectors in the control circuit, Issues with the transmission control module. 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 GMC indicates Transmission Control Solenoid Valve 6 Control Circuit Low Voltage.
Common causes
Common causes include Faulty transmission control solenoid valve 6, Damaged wiring or connectors in the control circuit, Issues with the transmission control module.
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 P2738 GMC Description

The P2738 GMC code indicates a problem with the transmission control solenoid valve 6 control circuit, specifically a low voltage condition. The transmission control solenoid valves are responsible for regulating the flow of transmission fluid within the transmission system, controlling gear shifts and overall transmission performance. When the control circuit for solenoid valve 6 detects low voltage, it can lead to issues with shifting gears, transmission slipping, and overall poor vehicle performance.

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

Common Causes of P2738 GMC

  1. Faulty transmission control solenoid valve 6
  2. Damaged wiring or connectors in the control circuit
  3. Issues with the transmission control module
  4. Low transmission fluid levels or dirty transmission fluid
  5. Electrical issues such as a blown fuse or relay

Symptoms of P2738 GMC

  1. Rough or delayed shifting between gears
  2. Transmission slipping or jerking during acceleration
  3. Illumination of the Check Engine Light
  4. Decreased fuel efficiency
  5. Harsh engagement when shifting gears

How to Fix P2738 GMC

  1. Begin by diagnosing the exact cause of the low voltage condition, using a diagnostic scanner to retrieve the trouble codes and conducting a thorough inspection of the transmission system.
  2. Inspect the wiring and connectors associated with solenoid valve 6, repairing or replacing any damaged components.
  3. Test the transmission control solenoid valve 6 for proper operation, replacing it if necessary.
  4. Check the transmission fluid levels and condition, topping off or performing a fluid flush and filter replacement if needed.
  5. Clear the trouble codes from the vehicle's computer and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P2738 GMC

The cost of repairing a transmission control solenoid valve 6 control circuit low voltage issue can vary depending on the specific cause of the problem. On average, you can expect to pay between $200 and $500 for parts and labor. However, this cost can fluctuate based on the location of the repair shop, the make and model of the vehicle, and the extent of the damage. It's recommended to obtain quotes from multiple repair shops to find the best price for your specific situation.

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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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