P0966 2015 GMC Sierra Code - Pressure Control Solenoid Valve 2 Control Circuit Low Voltage
Quick Answer
The P0966 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Pressure Control Solenoid Valve 2 Control Circuit Low Voltage. Common causes include Faulty pressure control solenoid valve 2, Wiring harness issues, Defective 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
- P0966 2015 GMC Sierra indicates Pressure Control Solenoid Valve 2 Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty pressure control solenoid valve 2, Wiring harness issues, Defective 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 P0966 2015 GMC Sierra Description
The P0966 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Pressure Control Solenoid Valve 2 Control Circuit Low Voltage. This code indicates that there is an issue with the electrical circuit responsible for controlling the pressure control solenoid valve 2 in the transmission. The pressure control solenoid valve is crucial for regulating hydraulic pressure within the transmission, which in turn affects gear shifting, torque converter lockup, and overall transmission performance.
Common Causes of P0966 2015 GMC Sierra
- Faulty pressure control solenoid valve 2
- Wiring harness issues
- Defective transmission control module (TCM)
- Poor electrical connection
- Electrical short or open circuit
Symptoms of P0966 2015 GMC Sierra
- Erratic or harsh shifting
- Delayed engagement when shifting gears
- Transmission slippage
- Illumination of the Check Engine Light
- Decreased fuel efficiency
How to Fix P0966 2015 GMC Sierra
- Begin by using a diagnostic scanner to retrieve the trouble codes and confirm the presence of P0966.
- Inspect the wiring harness for any visible damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the pressure control solenoid valve 2 for proper operation and replace if faulty.
- Check the transmission control module (TCM) for any signs of malfunction and replace if needed.
- Clear the DTCs from the vehicle's memory and perform a test drive to ensure the issue has been resolved.
Cost to Fix P0966 2015 GMC Sierra
The typical repair costs for addressing a P0966 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of replacing a pressure control solenoid valve 2 can range from $150 to $300, while replacing a faulty transmission control module (TCM) can cost between $500 and $1000. Labor costs at auto repair shops typically range from $80 to $150 per hour. It's advisable to consult with a local mechanic or dealership for a more accurate estimate based on your location and vehicle specifics.
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