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P0777 2018 Chevrolet Silverado Code - Clutch Pressure Control Solenoid 2 Stuck On

Quick Answer

The P0777 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Clutch Pressure Control Solenoid 2 being stuck on. Common causes include Faulty clutch pressure control solenoid 2, Wiring or electrical issues, Low transmission fluid level or contaminated 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
P0777 2018 Chevrolet Silverado indicates Clutch Pressure Control Solenoid 2 Stuck On.
Common causes
Common causes include Faulty clutch pressure control solenoid 2, Wiring or electrical issues, Low transmission fluid level or contaminated 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 12, 2024
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Code P0777 2018 Chevrolet Silverado Description

The P0777 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Clutch Pressure Control Solenoid 2 being stuck on. This solenoid is responsible for controlling the hydraulic pressure in the transmission's clutch system. When this solenoid is stuck in the on position, it can lead to various issues with the transmission's operation.

OBDII Code P0777 2018 Chevrolet Silverado - Clutch Pressure Control Solenoid 2 Stuck On
P0777 2018 Chevrolet Silverado Code - Clutch Pressure Control Solenoid 2 Stuck On

Common Causes of P0777 2018 Chevrolet Silverado

  1. Faulty clutch pressure control solenoid 2
  2. Wiring or electrical issues
  3. Low transmission fluid level or contaminated fluid
  4. Mechanical damage to the transmission components
  5. Software or programming issues

Symptoms of P0777 2018 Chevrolet Silverado

  1. Harsh or delayed shifting
  2. Transmission slipping
  3. Erratic or unpredictable shifting behavior
  4. Transmission overheating
  5. Illumination of the Check Engine Light

How to Fix P0777 2018 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the issue using a scan tool to confirm the P0777 code.
  2. Inspect the clutch pressure control solenoid 2 for proper operation and replace if necessary.
  3. Check the wiring and electrical connections related to the solenoid for any damage or corrosion.
  4. Verify the transmission fluid level and condition, topping off or replacing as needed.
  5. Clear the DTC and test drive the vehicle to ensure proper operation of the transmission.

Cost to Fix P0777 2018 Chevrolet Silverado

The cost of repairing a clutch pressure control solenoid 2 stuck on issue in a 2018 Chevrolet Silverado can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to obtain quotes from multiple sources to get a more accurate estimate.

What does this mean?

Tech Notes for P0777 2018 Chevrolet Silverado

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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