P0966 2016 GMC Sierra Code - Pressure Control Solenoid Valve 2 Control Circuit Low Voltage
Quick Answer
The P0966 diagnostic trouble code (DTC) in a 2016 GMC Sierra indicates an issue with the Pressure Control Solenoid Valve 2 Control Circuit, specifically detecting low voltage. Common causes include Faulty Pressure Control Solenoid Valve 2, Damaged wiring or connectors in the control circuit, Low transmission fluid levels or contaminated fluid. 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 2016 GMC Sierra indicates Pressure Control Solenoid Valve 2 Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty Pressure Control Solenoid Valve 2, Damaged wiring or connectors in the control circuit, Low transmission fluid levels or contaminated fluid.
- 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 2016 GMC Sierra Description
The P0966 diagnostic trouble code (DTC) in a 2016 GMC Sierra indicates an issue with the Pressure Control Solenoid Valve 2 Control Circuit, specifically detecting low voltage. This solenoid valve is a crucial component of the transmission system responsible for regulating hydraulic pressure. When the control circuit voltage is lower than expected, it can lead to improper operation of the solenoid valve, affecting the transmission's ability to shift gears smoothly and efficiently.
Common Causes of P0966 2016 GMC Sierra
- Faulty Pressure Control Solenoid Valve 2
- Damaged wiring or connectors in the control circuit
- Low transmission fluid levels or contaminated fluid
- Electrical issues such as a blown fuse or relay
- Internal transmission problems
Symptoms of P0966 2016 GMC Sierra
- Harsh or delayed shifting
- Erratic transmission behavior
- Transmission slipping
- Illuminated Check Engine Light
- Decreased fuel efficiency
How to Fix P0966 2016 GMC Sierra
- Begin by conducting a thorough diagnostic scan to confirm the P0966 code and identify the specific cause of the low voltage condition.
- Inspect the wiring and connectors associated with the Pressure Control Solenoid Valve 2 for any damage or corrosion. Repair or replace as necessary.
- Test the solenoid valve itself for proper operation and replace if found to be faulty.
- Check the transmission fluid level and condition, topping up or performing a fluid flush if needed.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0966 2016 GMC Sierra
The typical repair costs for addressing a P0966 code in a 2016 GMC Sierra can vary depending on the specific cause of the issue. On average, the parts required for this repair, such as a new solenoid valve or wiring components, can range from $100 to $300. Labor costs at an auto repair shop can add an additional $100 to $300, with total repair costs potentially amounting to $200 to $600. It's important to note that these estimates are general and can fluctuate based on the location, shop rates, and any additional repairs or services needed. It's recommended to consult with a professional mechanic for a more accurate cost assessment.
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