Engine-CodesGMC – P0976 GMC

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

Quick Answer

The P0976 GMC code indicates a Shift Solenoid 'B' Short to Ground. Common causes include Short circuit in the shift solenoid 'B' circuit, Damaged wiring or connectors, Faulty shift solenoid 'B'. 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 GMC indicates Shift Solenoid 'B' Short To Ground.
Common causes
Common causes include Short circuit in the shift solenoid 'B' circuit, Damaged wiring or connectors, Faulty shift solenoid 'B'.
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 11, 2024
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Code P0976 GMC Description

The P0976 GMC code indicates a Shift Solenoid 'B' Short to Ground. This means that there is an electrical issue with the shift solenoid 'B' circuit, where the solenoid is not receiving the proper voltage due to a short circuit to ground. The shift solenoids in a vehicle's transmission are responsible for controlling the flow of transmission fluid to engage different gears. In this case, the solenoid 'B' is not functioning correctly, which can lead to problems with shifting gears smoothly and efficiently.

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

Common Causes of P0976 GMC

  1. Short circuit in the shift solenoid 'B' circuit
  2. Damaged wiring or connectors
  3. Faulty shift solenoid 'B'
  4. Corroded or loose connections
  5. Electronic control module (ECM) issues

Symptoms of P0976 GMC

  1. Harsh or delayed shifting
  2. Slipping gears
  3. Transmission not shifting properly
  4. Illuminated Check Engine Light
  5. Decreased fuel efficiency

How to Fix P0976 GMC

  1. Perform a thorough inspection of the shift solenoid 'B' circuit, wiring, and connectors to identify any damage or corrosion.
  2. Test the shift solenoid 'B' using a multimeter to determine if it is functioning correctly.
  3. Replace any damaged wiring, connectors, or the shift solenoid 'B' as needed.
  4. Clear the diagnostic trouble codes from the vehicle's ECM and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, consult a professional mechanic for further diagnosis and repair.

Cost to Fix P0976 GMC

The typical repair costs for a Shift Solenoid 'B' Short to Ground code can range from $150 to $400, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary depending on the location, vehicle make and model, and engine type. It is recommended to check local rates for a more accurate estimate.

Tech Notes for P0976 GMC









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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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