Engine-CodesGMC – P0976 2018 GMC Sierra

P0976 2018 GMC Sierra Code - Shift Solenoid 'B' Short To Ground

Quick Answer

The P0976 diagnostic trouble code (DTC) in a 2018 GMC Sierra indicates that there is a short to ground in Shift Solenoid 'B'. Common causes include Damaged wiring or connectors, Faulty shift solenoid, Issues with the transmission control module. 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
P0976 2018 GMC Sierra indicates Shift Solenoid 'B' Short To Ground.
Common causes
Common causes include Damaged wiring or connectors, Faulty shift solenoid, Issues with the transmission control module.
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 P0976 2018 GMC Sierra Description

The P0976 diagnostic trouble code (DTC) in a 2018 GMC Sierra indicates that there is a short to ground in Shift Solenoid 'B'. The shift solenoid is a crucial component of the vehicle's transmission system, responsible for controlling the flow of transmission fluid to engage the appropriate gear. When the solenoid is shorted to ground, it means that there is an unintended connection between the solenoid and the vehicle's ground, causing electrical current to flow where it shouldn't. This can disrupt the normal operation of the transmission, leading to issues with shifting gears smoothly and efficiently.

OBDII Code P0976 2018 GMC Sierra - Shift Solenoid 'B' Short To Ground
P0976 2018 GMC Sierra Code - Shift Solenoid 'B' Short To Ground

Common Causes of P0976 2018 GMC Sierra

  1. Damaged wiring or connectors
  2. Faulty shift solenoid
  3. Issues with the transmission control module
  4. Corrosion or moisture in the electrical system
  5. Poor electrical connections

Symptoms of P0976 2018 GMC Sierra

  1. Harsh or delayed shifting
  2. Erratic behavior while driving
  3. Decreased fuel efficiency
  4. Illumination of the Check Engine Light
  5. Transmission slipping or not engaging properly

How to Fix P0976 2018 GMC Sierra

  1. Perform a thorough inspection of the wiring and connectors associated with Shift Solenoid 'B' to identify any damage or corrosion.
  2. Test the shift solenoid to determine if it is functioning correctly or needs to be replaced.
  3. Check the transmission control module for any faults or errors that may be contributing to the issue.
  4. Repair or replace any damaged wiring, connectors, or components as necessary.
  5. Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0976 2018 GMC Sierra

The typical repair costs for addressing a Shift Solenoid 'B' short to ground can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the parts for this repair could range from $100 to $300, while labor costs may be around $150 to $300. Overall, the total repair cost could fall between $250 and $600. It's important to note that these estimates are approximate, and actual costs may vary based on factors such as location, vehicle make and model, and labor rates at auto repair shops. It's recommended to obtain quotes from local shops for a more accurate cost estimate.

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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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