Engine-CodesGMC – P0756 2016 GMC Sierra

P0756 2016 GMC Sierra Code - Shift Solenoid Valve 2 Performance Stuck Off

Quick Answer

The P0756 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the transmission control module (TCM) has detected a performance issue with shift solenoid valve 2, which is stuck in the off position. Common causes include Faulty shift solenoid valve 2, Wiring or connector issues, Low transmission fluid levels. 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 2016 GMC Sierra indicates Shift Solenoid Valve 2 Performance Stuck Off.
Common causes
Common causes include Faulty shift solenoid valve 2, Wiring or connector issues, Low transmission fluid levels.
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 2016 GMC Sierra Description

The P0756 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the transmission control module (TCM) has detected a performance issue with shift solenoid valve 2, which is stuck in the off position. Shift solenoids are crucial components in automatic transmissions that control the flow of transmission fluid to engage specific gears. When solenoid valve 2 is stuck off, it can lead to improper shifting, erratic behavior, and potential damage to the transmission system.

OBDII Code P0756 2016 GMC Sierra - Shift Solenoid Valve 2 Performance Stuck Off
P0756 2016 GMC Sierra Code - Shift Solenoid Valve 2 Performance Stuck Off

Common Causes of P0756 2016 GMC Sierra

  1. Faulty shift solenoid valve 2
  2. Wiring or connector issues
  3. Low transmission fluid levels
  4. Internal transmission damage
  5. TCM malfunction

Symptoms of P0756 2016 GMC Sierra

  1. Harsh or delayed shifting
  2. Slipping gears
  3. Poor acceleration
  4. Decreased fuel efficiency
  5. Illumination of the check engine light

How to Fix P0756 2016 GMC Sierra

  1. Begin by checking the transmission fluid level and condition. Top off or replace the fluid if necessary.
  2. Inspect the wiring and connectors associated with shift solenoid valve 2 for any damage or corrosion. Repair or replace as needed.
  3. Test the shift solenoid valve 2 for proper operation. Replace the solenoid if it is found to be faulty.
  4. Clear the DTC and reset the TCM to see if the issue persists.
  5. If the problem persists, further diagnostics may be required to identify any underlying transmission issues.

Cost to Fix P0756 2016 GMC Sierra

The cost of repairing a P0756 code can vary depending on the specific cause of the issue. On average, the cost of replacing a shift solenoid valve can range from $150 to $300, including parts and labor. Additional costs may be incurred if further diagnostics or repairs are needed. It's important to note that labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources to ensure a competitive price.

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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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