P0966 2014 GMC Sierra Code - Pressure Control Solenoid Valve 2 Control Circuit Low Voltage
Quick Answer
The P0966 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Pressure Control Solenoid Valve 2 Control Circuit having low voltage. Common causes include Faulty Pressure Control Solenoid Valve 2, Wiring issues such as shorts or open circuits, Malfunctioning 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 2014 GMC Sierra indicates Pressure Control Solenoid Valve 2 Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty Pressure Control Solenoid Valve 2, Wiring issues such as shorts or open circuits, Malfunctioning 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 2014 GMC Sierra Description
The P0966 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Pressure Control Solenoid Valve 2 Control Circuit having low voltage. This solenoid valve plays a crucial role in regulating the hydraulic pressure within the transmission, which is essential for smooth gear shifting and overall transmission performance. When the control circuit is experiencing low voltage, it can lead to erratic shifting, harsh gear changes, transmission slipping, and even transmission overheating.
Common Causes of P0966 2014 GMC Sierra
- Faulty Pressure Control Solenoid Valve 2
- Wiring issues such as shorts or open circuits
- Malfunctioning Transmission Control Module (TCM)
- Low transmission fluid level or dirty fluid affecting solenoid operation
- Electrical problems within the transmission system
Symptoms of P0966 2014 GMC Sierra
- Rough or harsh shifting between gears
- Delayed engagement when shifting into gear
- Transmission slipping or jerking
- Illumination of the Check Engine Light
- Reduced fuel efficiency due to transmission inefficiency
How to Fix P0966 2014 GMC Sierra
- Begin by conducting a thorough inspection of the wiring harness connected to the Pressure Control Solenoid Valve 2 to check for any visible damage or loose connections.
- Test the solenoid valve using a multimeter to determine if it is functioning properly. Replace the solenoid if it fails the test.
- Check the transmission fluid level and condition. If low or dirty, perform a transmission fluid flush and refill.
- Scan the TCM for any error codes and address any issues found. Reset the TCM if necessary.
- Clear the DTC with a diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0966 2014 GMC Sierra
The cost of repairing a P0966 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. Typically, the cost of replacing a Pressure Control Solenoid Valve 2 can range from $150 to $300, including parts and labor. If additional repairs or diagnostic work are needed, the total cost could increase. It's recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of your vehicle. Labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150.
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