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Engine-Codes – GMC – P0757 2018 GMC Sierra

P0757 2018 GMC Sierra Code - Shift Solenoid Valve 2 Performance Stuck On

Quick Answer

The P0757 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Shift Solenoid Valve 2 Performance being stuck on. Common causes include Faulty shift solenoid valve, Low transmission fluid levels, Clogged transmission filter. 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
P0757 2018 GMC Sierra indicates Shift Solenoid Valve 2 Performance Stuck On.
Common causes
Common causes include Faulty shift solenoid valve, Low transmission fluid levels, Clogged transmission filter.
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 16, 2024
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Code P0757 2018 GMC Sierra Description

The P0757 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Shift Solenoid Valve 2 Performance being stuck on. This code is specifically related to the transmission system of the vehicle. The shift solenoid valves are responsible for controlling the flow of transmission fluid to engage the appropriate gear for smooth shifting. When the Shift Solenoid Valve 2 is stuck in the on position, it can lead to various issues with the transmission's performance.

OBDII Code P0757 2018 GMC Sierra - Shift Solenoid Valve 2 Performance Stuck On
P0757 2018 GMC Sierra Code - Shift Solenoid Valve 2 Performance Stuck On

Common Causes of P0757 2018 GMC Sierra

  1. Faulty shift solenoid valve
  2. Low transmission fluid levels
  3. Clogged transmission filter
  4. Electrical issues
  5. Internal transmission damage

Symptoms of P0757 2018 GMC Sierra

  1. Harsh or delayed shifting
  2. Erratic shifting patterns
  3. Transmission slipping
  4. Transmission stuck in a single gear

How to Fix P0757 2018 GMC Sierra

  1. Perform a diagnostic scan to confirm the P0757 code and identify the specific cause.
  2. Inspect the shift solenoid valve 2 for proper operation and replace if necessary.
  3. Check and top up transmission fluid levels to the manufacturer's specifications.
  4. Replace the transmission filter if it is found to be clogged.
  5. Address any electrical issues related to the transmission system.

Cost to Fix P0757 2018 GMC Sierra

The typical repair costs for resolving a P0757 code can vary depending on the specific cause and the extent of the repair needed. In general, the cost of replacing a shift solenoid valve can range from $150 to $300, while addressing low transmission fluid levels or a clogged filter may add additional costs. Labor rates at auto repair shops can vary between $80 and $150 per hour, so the total cost of the repair can fluctuate based on these factors. It is advisable to consult with a professional mechanic for a more accurate estimate based on the vehicle's make and model, as well as the local labor rates.

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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 P0757 2018 GMC Sierra Code

1. What does code P0757 mean on a 2018 GMC Sierra?

Code P0757 indicates that shift solenoid valve 2 is stuck in the "on" position, causing issues with transmission performance.

2. What are the symptoms of a P0757 code on a 2018 GMC Sierra?

Common symptoms include harsh or erratic shifting, transmission slippage, poor acceleration, and the check engine light turning on.

3. What causes the P0757 code on a GMC Sierra?

Potential causes include a faulty shift solenoid, dirty or low transmission fluid, a malfunctioning transmission control module (TCM), or clogged transmission passages.

4. Can I drive my 2018 GMC Sierra with a P0757 code?

Driving with this code is not recommended as it can lead to further transmission damage and unsafe driving conditions.

5. How do I fix a P0757 code on my GMC Sierra?

Repairs may involve replacing the shift solenoid, flushing the transmission fluid, repairing wiring or connectors, or addressing issues in the TCM.

6. How much does it cost to fix a P0757 code on a GMC Sierra?

Repair costs can range from $150 to $400 for a solenoid replacement, but costs may increase if transmission damage or other issues are present.

7. How do I diagnose the P0757 code on a 2018 GMC Sierra?

Diagnosis involves checking the transmission fluid level and condition, inspecting the shift solenoid and wiring, and using a scan tool to monitor transmission inputs and outputs.

8. Can low transmission fluid cause a P0757 code?

Yes, low or dirty transmission fluid can restrict solenoid operation, leading to a P0757 code.

9. Is a P0757 code specific to the GMC Sierra?

No, the P0757 code can appear on other vehicles with similar transmission systems, but the diagnostic and repair process may vary.

10. Will resetting the check engine light fix a P0757 code?

Resetting the light may clear the code temporarily, but the underlying issue must be addressed to prevent the code from returning.

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