P2814 2018 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Low Voltage
Quick Answer
The P2814 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates an issue with the Transmission Control Solenoid Valve 7 Control Circuit registering low voltage. Common causes include Faulty Transmission Control Solenoid Valve 7, Wiring or connector issues in the control circuit, Low transmission fluid levels or dirty 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
- P2814 2018 GMC Sierra indicates Transmission Control Solenoid Valve 7 Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty Transmission Control Solenoid Valve 7, Wiring or connector issues in the control circuit, Low transmission fluid levels or dirty 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 P2814 2018 GMC Sierra Description
The P2814 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates an issue with the Transmission Control Solenoid Valve 7 Control Circuit registering low voltage. The transmission control solenoid valves are crucial components of the transmission system, responsible for regulating the flow of transmission fluid to control gear shifting. Solenoids are electromechanical devices that open and close circuits to allow the transmission to shift gears smoothly.
Common Causes of P2814 2018 GMC Sierra
- Faulty Transmission Control Solenoid Valve 7.
- Wiring or connector issues in the control circuit.
- Low transmission fluid levels or dirty fluid.
- Electrical issues such as a blown fuse or short circuit.
- Internal transmission problems affecting the solenoid operation.
Symptoms of P2814 2018 GMC Sierra
- Delayed or harsh shifting between gears.
- Transmission slipping or jerking during acceleration.
- Transmission stuck in a particular gear.
- Illumination of the Check Engine Light.
- Decreased fuel efficiency due to improper gear shifting.
How to Fix P2814 2018 GMC Sierra
- Begin by conducting a thorough inspection of the transmission control solenoid valve 7 and its wiring harness to check for any visible damage or loose connections.
- Test the solenoid valve using a multimeter to ensure it is functioning within the specified voltage range.
- If the solenoid valve is faulty, replace it with a new one and ensure proper installation.
- Check the transmission fluid level and condition, topping up or replacing as necessary.
- Clear the DTC using an OBD-II scanner and test drive the vehicle to confirm that the issue has been resolved.
Cost to Fix P2814 2018 GMC Sierra
The cost of repairing a Transmission Control Solenoid Valve 7 Control Circuit Low Voltage issue can vary depending on the extent of the problem and the specific components that need to be replaced. On average, the parts for a solenoid valve replacement can range from $100 to $300, while labor costs can add an additional $150 to $300. Overall, the total repair cost for this issue may fall between $250 and $600. It's important to note that these are rough estimates, and actual costs may differ based on the location, vehicle make and model, and the specific repair shop's rates. It's recommended to obtain quotes from local auto repair shops for a more accurate cost estimate.
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Frequently Asked Questions about P2814 2018 GMC Sierra Code
1. What does the OBDII code P2814 mean on a 2018 GMC Sierra?
The P2814 code indicates a "Transmission Control Solenoid Valve 7 Control Circuit Low Voltage," meaning the transmission control module has detected an electrical issue with solenoid 7.
2. What are the common symptoms of code P2814 on a 2018 GMC Sierra?
Symptoms may include harsh shifting, slipping gears, failure to shift, transmission staying in limp mode, or an illuminated check engine light.
3. What causes the P2814 code to appear on my 2018 GMC Sierra?
Common causes include a faulty transmission control solenoid, damaged wiring or connectors, a malfunctioning transmission control module (TCM), or low transmission fluid.
4. Can low transmission fluid cause the P2814 code on a 2018 GMC Sierra?
Yes, low transmission fluid can cause improper solenoid operation, leading to the P2814 code. Check and refill the fluid as necessary.
5. How do I diagnose the P2814 code on my GMC Sierra?
Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to check the solenoid's circuit for continuity and voltage. If no issues are found, test the solenoid itself.
6. Is it safe to drive my 2018 GMC Sierra with the P2814 code?
Driving with the P2814 code is not recommended, as it can lead to further transmission damage and unsafe driving conditions due to improper shifting.
7. How can I fix the P2814 code on my 2018 GMC Sierra?
Repairs may involve replacing the transmission control solenoid, repairing damaged wiring or connectors, or reprogramming or replacing the transmission control module (TCM).
8. How much does it cost to fix the P2814 code on a GMC Sierra?
Repair costs can range from $100 to $500 for solenoid replacement or wiring repairs. If the TCM requires replacement, costs may rise to $1,000 or more.
9. Can a bad TCM cause the P2814 code on my GMC Sierra?
Yes, a malfunctioning transmission control module can cause the P2814 code if it fails to properly control the solenoid circuit.
10. Do I need a professional mechanic to fix the P2814 code on a 2018 GMC Sierra?
While minor wiring repairs can be done by experienced DIYers, diagnosing and replacing solenoids or the TCM typically requires professional expertise and specialized tools.
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