P0977 2017 GMC Sierra Code - Shift Solenoid 'B' Open Or Short To Power
Quick Answer
The P0977 diagnostic trouble code (DTC) in a 2017 GMC Sierra indicates that there is an issue with Shift Solenoid 'B' being open or short to power. Common causes include Faulty shift solenoid 'B', Wiring issues such as a short to power or open circuit, Faulty transmission control module (TCM). 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 2017 GMC Sierra indicates Shift Solenoid 'B' Open Or Short To Power.
- Common causes
- Common causes include Faulty shift solenoid 'B', Wiring issues such as a short to power or open circuit, Faulty transmission control module (TCM).
- 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.
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Code P0977 2017 GMC Sierra Description
The P0977 diagnostic trouble code (DTC) in a 2017 GMC Sierra indicates that there is an issue with Shift Solenoid 'B' being open or short to power. The shift solenoid is a crucial component of the transmission system that is responsible for controlling the flow of transmission fluid to engage or disengage gears. In this case, an open circuit or a short to power in Shift Solenoid 'B' can disrupt the proper operation of the transmission, leading to potential drivability issues.
Common Causes of P0977 2017 GMC Sierra
- Faulty shift solenoid 'B'
- Wiring issues such as a short to power or open circuit
- Faulty transmission control module (TCM)
- Corrosion or poor connections in the electrical system
- Overheating of the transmission fluid
Symptoms of P0977 2017 GMC Sierra
- Erratic shifting behavior
- Harsh or delayed shifting
- Transmission slipping
- Transmission getting stuck in a gear
- Illumination of the Check Engine Light
How to Fix P0977 2017 GMC Sierra
- Diagnose the issue using a scan tool to confirm the P0977 code and pinpoint the exact cause of the problem.
- Inspect the wiring harness and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the shift solenoid 'B' for proper operation and replace if found to be faulty.
- Clear the DTC and perform a test drive to ensure that the transmission is shifting correctly without any issues.
- If the problem persists, further diagnostics may be required to identify any underlying issues with the transmission control module or other components.
Cost to Fix P0977 2017 GMC Sierra
The cost of repairing a Shift Solenoid 'B' open or short to power issue in a 2017 GMC Sierra can vary depending on the extent of the damage and the specific parts that need to be replaced. On average, the cost of replacing a shift solenoid can range from $150 to $300, including parts and labor. However, additional costs may apply if other components need to be repaired or replaced. It's important to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates can vary between different repair facilities, so it's advisable to shop around for the best price.
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