Engine-CodesGMC – P0756 2017 GMC Sierra

P0756 2017 GMC Sierra Code - Shift Solenoid Valve 2 Performance Stuck Off

Quick Answer

The P0756 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the transmission control module (TCM) has detected a problem with the Shift Solenoid Valve 2. Common causes include Faulty Shift Solenoid Valve 2, Low transmission fluid levels, Dirty or contaminated transmission fluid. 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
P0756 2017 GMC Sierra indicates Shift Solenoid Valve 2 Performance Stuck Off.
Common causes
Common causes include Faulty Shift Solenoid Valve 2, Low transmission fluid levels, Dirty or contaminated transmission fluid.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0756 2017 GMC Sierra Description

The P0756 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the transmission control module (TCM) has detected a problem with the Shift Solenoid Valve 2. This solenoid is responsible for controlling the flow of transmission fluid to engage or disengage specific gears within the transmission. When the solenoid is stuck off, it means that it is not functioning properly, leading to issues with gear shifting and overall transmission performance.

OBDII Code P0756 2017 GMC Sierra - Shift Solenoid Valve 2 Performance Stuck Off
P0756 2017 GMC Sierra Code - Shift Solenoid Valve 2 Performance Stuck Off

Common Causes of P0756 2017 GMC Sierra

  1. Faulty Shift Solenoid Valve 2
  2. Low transmission fluid levels
  3. Dirty or contaminated transmission fluid
  4. Wiring issues
  5. Faulty Transmission Control Module (TCM)

Symptoms of P0756 2017 GMC Sierra

  1. Harsh or delayed shifting
  2. Transmission slipping
  3. Decreased fuel efficiency
  4. Transmission getting stuck in a specific gear
  5. Illuminated Check Engine Light

How to Fix P0756 2017 GMC Sierra

  1. Perform a diagnostic scan to confirm the P0756 code and identify the specific issue.
  2. Inspect the Shift Solenoid Valve 2 for any signs of damage or malfunction.
  3. Check transmission fluid levels and condition, top up or replace if necessary.
  4. Inspect wiring and connections related to the solenoid for any damage or corrosion.
  5. Replace the Shift Solenoid Valve 2 if it is found to be faulty, and clear the DTC from the TCM.

Cost to Fix P0756 2017 GMC Sierra

The cost of repairing a Shift Solenoid Valve 2 performance issue can vary depending on the specific cause of the problem and the labor rates in your area. Typically, the cost of replacing the solenoid itself ranges from $150 to $300, while the total repair cost including parts and labor can range from $300 to $600. It's important to note that additional diagnostic time and labor costs may apply, and rates can vary based on location, vehicle make and model, and the complexity of the repair. It's recommended to obtain a detailed estimate from a qualified auto repair shop before proceeding with the repair.

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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.

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