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Engine-Codes – GMC – P0776 2015 GMC Sierra

P0776 2015 GMC Sierra Code - Clutch Pressure Control Solenoid 2 Stuck Off

Quick Answer

The P0776 code for a 2015 GMC Sierra indicates a problem with the Clutch Pressure Control Solenoid 2 being stuck off. Common causes include Faulty Clutch Pressure Control Solenoid 2, Wiring issue or poor connection, Low 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
P0776 2015 GMC Sierra indicates Clutch Pressure Control Solenoid 2 Stuck Off.
Common causes
Common causes include Faulty Clutch Pressure Control Solenoid 2, Wiring issue or poor connection, Low 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0776 2015 GMC Sierra Description

The P0776 code for a 2015 GMC Sierra indicates a problem with the Clutch Pressure Control Solenoid 2 being stuck off. This solenoid is a crucial component of the transmission system, responsible for controlling the hydraulic pressure that engages and disengages the clutches inside the transmission. When this solenoid is stuck off, it means that the transmission is not receiving the necessary hydraulic pressure to shift gears properly.

OBDII Code P0776 2015 GMC Sierra - Clutch Pressure Control Solenoid 2 Stuck Off
P0776 2015 GMC Sierra Code - Clutch Pressure Control Solenoid 2 Stuck Off

Common Causes of P0776 2015 GMC Sierra

  1. Faulty Clutch Pressure Control Solenoid 2
  2. Wiring issue or poor connection
  3. Low transmission fluid
  4. Transmission control module malfunction
  5. Electrical issue in the transmission system

Symptoms of P0776 2015 GMC Sierra

  1. Harsh or delayed shifting
  2. Slipping gears
  3. Limp mode activated
  4. Transmission getting stuck in a single gear
  5. Illumination of the Check Engine Light

How to Fix P0776 2015 GMC Sierra

  1. Diagnose the code using an OBD-II scanner to confirm the issue is related to the Clutch Pressure Control Solenoid 2.
  2. Inspect the wiring and connections to ensure there are no loose or damaged components.
  3. Check the transmission fluid level and quality, topping up or replacing it if necessary.
  4. Test the Clutch Pressure Control Solenoid 2 for proper function and replace it if found to be faulty.
  5. Clear the code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0776 2015 GMC Sierra

The typical repair costs for addressing a P0776 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty Clutch Pressure Control Solenoid 2 can cost anywhere from $150 to $300, including parts and labor. Additional costs may be incurred if there are wiring issues or other components that need to be addressed. It's important to consider the specific diagnosis time and labor rates at auto repair shops, which can range from $80 to $150 per hour. It's recommended to check with local shops for a more accurate estimate based on your location and vehicle.

What does this mean?

Tech Notes for P0776 2015 GMC Sierra

When a transmission solenoid has malfunctioned, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is dirty, it's recommended to change the transmission fluid and if possible, remove the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure, and that the transmission will need to be rebuilt or replaced.

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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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