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P0977 Chevrolet Code - Shift Solenoid 'B' Open Or Short To Power

Quick Answer

The P0977 code for Chevrolet indicates that there is a problem with Shift Solenoid 'B' being open or having a short to power. Common causes include Faulty shift solenoid 'B', Wiring issues or shorts in the electrical system, 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
P0977 Chevrolet indicates Shift Solenoid 'B' Open Or Short To Power.
Common causes
Common causes include Faulty shift solenoid 'B', Wiring issues or shorts in the electrical system, 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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P0977 Chevrolet Description

The P0977 code for Chevrolet indicates that there is a problem with Shift Solenoid 'B' being open or having a short to power. The shift solenoid is a crucial component in the transmission system that helps regulate the flow of transmission fluid, allowing for smooth gear shifts. When this solenoid is open or has a short to power, it can lead to issues with shifting gears, causing the vehicle to have difficulty changing gears or staying in the correct gear. This can result in poor performance, decreased fuel efficiency, and even potential damage to the transmission system if left unaddressed.

OBDII Code P0977 Chevrolet - Shift Solenoid 'B' Open Or Short To Power
P0977 Chevrolet Code - Shift Solenoid 'B' Open Or Short To Power

Common Causes of P0977 Chevrolet

  1. Faulty shift solenoid 'B'
  2. Wiring issues or shorts in the electrical system
  3. Low transmission fluid levels
  4. Contaminated or degraded transmission fluid
  5. Internal transmission damage

Symptoms of P0977 Chevrolet

  1. Difficulty shifting gears
  2. Delayed or harsh shifting
  3. Stuck in a particular gear
  4. Transmission slipping
  5. Illumination of the Check Engine Light

How to Fix P0977 Chevrolet

  1. Diagnose the issue using a scan tool to confirm the P0977 code and identify the specific cause.
  2. Inspect the shift solenoid 'B' and its wiring for any visible damage or signs of wear.
  3. Replace the faulty shift solenoid 'B' if necessary.
  4. Check and top up transmission fluid levels if low.
  5. Clear the trouble codes and test drive the vehicle to ensure proper shifting functionality.

Cost to Fix P0977 Chevrolet

The typical repair costs for addressing a Shift Solenoid 'B' Open Or Short To Power issue can range from $200 to $500, depending on the extent of the problem and whether any additional parts or repairs are needed. It's important to note that labor rates can vary, with hourly rates typically falling between $80 and $150. Factors such as location, vehicle make and model, and the specific repairs required can impact the final cost. To obtain an accurate estimate, it is recommended to consult with local auto repair shops.

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Information for Specific Chevrolet Models

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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