Engine-CodesGMC – P2812 2014 GMC Sierra

P2812 2014 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Open

Quick Answer

The P2812 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Transmission Control Solenoid Valve 7 Control Circuit being open. Common causes include Faulty transmission control solenoid valve, Wiring issues or electrical connection problems, Corrosion or damage to the solenoid valve. 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
P2812 2014 GMC Sierra indicates Transmission Control Solenoid Valve 7 Control Circuit Open.
Common causes
Common causes include Faulty transmission control solenoid valve, Wiring issues or electrical connection problems, Corrosion or damage to the solenoid valve.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P2812 2014 GMC Sierra Description

The P2812 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Transmission Control Solenoid Valve 7 Control Circuit being open. This solenoid valve is a crucial component of the vehicle's transmission system, responsible for controlling the flow of transmission fluid to the various components for proper gear shifting. When the control circuit is open, it means that there is a break or interruption in the electrical connection that controls the solenoid valve's operation.

OBDII Code P2812 2014 GMC Sierra - Transmission Control Solenoid Valve 7 Control Circuit Open
P2812 2014 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Open

Common Causes of P2812 2014 GMC Sierra

  1. Faulty transmission control solenoid valve
  2. Wiring issues or electrical connection problems
  3. Corrosion or damage to the solenoid valve
  4. Faulty transmission control module
  5. Poor transmission fluid condition or level

Symptoms of P2812 2014 GMC Sierra

  1. Harsh or delayed shifting
  2. Difficulty shifting gears
  3. Transmission slipping
  4. Check Engine light illuminated
  5. Reduced fuel efficiency

How to Fix P2812 2014 GMC Sierra

  1. Diagnose the issue by using a scan tool to confirm the P2812 code.
  2. Inspect the wiring and electrical connections to the Transmission Control Solenoid Valve 7.
  3. Test the solenoid valve for proper operation and replace if necessary.
  4. Check the transmission control module for any faults or errors.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2812 2014 GMC Sierra

The cost of repairing a Transmission Control Solenoid Valve 7 Control Circuit open issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the cost of replacing a solenoid valve can range from $150 to $300, including parts and labor. However, additional costs may apply if other components need to be replaced or if there are wiring issues that require repair. It's recommended to consult with a professional mechanic for a more accurate cost estimate based on your vehicle's specific needs.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2812 2014 GMC Sierra Code

1. What does the OBDII code P2812 mean on a 2014 GMC Sierra?

The code P2812 indicates an open circuit issue in the Transmission Control Solenoid Valve 7 control circuit.

2. What are the common symptoms of code P2812 in a 2014 GMC Sierra?

Symptoms may include harsh or delayed shifting, transmission slipping, reduced fuel efficiency, or the vehicle entering "limp mode."

3. What causes the P2812 code to appear in a 2014 GMC Sierra?

Common causes include a faulty transmission control solenoid, damaged wiring or connectors, or a malfunctioning transmission control module (TCM).

4. Can a dirty transmission fluid cause the P2812 code?

While dirty or contaminated transmission fluid is not a direct cause, it can contribute to solenoid or valve block issues that trigger the code.

5. How do I diagnose the P2812 code in my 2014 GMC Sierra?

Use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, and test the solenoid and TCM with a multimeter to check for continuity.

6. Can I drive my 2014 GMC Sierra with the P2812 code?

Driving with this code is not recommended, as it can lead to further transmission damage or unsafe driving conditions.

7. How do I fix the P2812 code on a 2014 GMC Sierra?

Repairs may involve replacing the faulty solenoid, repairing or replacing damaged wiring, or reprogramming or replacing the TCM.

8. How much does it cost to repair the P2812 code in a 2014 GMC Sierra?

Repair costs vary, but replacing a transmission solenoid typically costs $200–$400, while wiring repairs or TCM replacement could add to the expense.

9. Can a weak battery trigger the P2812 code?

A weak or failing battery can cause electrical issues that may indirectly affect the circuit, but it is not a common cause of this specific code.

10. Is it necessary to reprogram the TCM after fixing the P2812 code?

In some cases, after repairing the solenoid or circuit, reprogramming or resetting the TCM may be necessary to clear the code and ensure proper operation.

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