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P2812 2017 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Open

Quick Answer

The P2812 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a Transmission Control Solenoid Valve 7 Control Circuit Open. Common causes include Faulty transmission control solenoid valve 7, Wiring harness issues, Corroded or damaged connectors. 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 2017 GMC Sierra indicates Transmission Control Solenoid Valve 7 Control Circuit Open.
Common causes
Common causes include Faulty transmission control solenoid valve 7, Wiring harness issues, Corroded or damaged connectors.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P2812 2017 GMC Sierra Description

The P2812 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a Transmission Control Solenoid Valve 7 Control Circuit Open. This means that there is an issue with the electrical circuit that controls the transmission solenoid valve number 7. The transmission solenoid valves are crucial components of the vehicle's automatic transmission system, responsible for regulating the flow of transmission fluid and engaging specific gears. Solenoid valve 7 is likely related to a specific gear or function within the transmission.

OBDII Code P2812 2017 GMC Sierra - Transmission Control Solenoid Valve 7 Control Circuit Open
P2812 2017 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Open

Common Causes of P2812 2017 GMC Sierra

  1. Faulty transmission control solenoid valve 7
  2. Wiring harness issues
  3. Corroded or damaged connectors
  4. Electrical short circuits
  5. PCM (Powertrain Control Module) failure

Symptoms of P2812 2017 GMC Sierra

  1. Erratic shifting
  2. Harsh or delayed gear changes
  3. Poor acceleration
  4. Transmission slipping
  5. Limp mode activation

How to Fix P2812 2017 GMC Sierra

  1. Begin by conducting a thorough visual inspection of the wiring harness and connectors associated with transmission solenoid valve 7. Look for any signs of damage, corrosion, or loose connections.
  2. Test the solenoid valve itself to determine if it is functioning correctly. This can be done using a multimeter to check for continuity and proper resistance.
  3. Check for any electrical short circuits that may be affecting the control circuit. Repair or replace any damaged wiring as needed.
  4. If the solenoid valve is found to be faulty, replace it with a new one. Ensure that the replacement part is compatible with the vehicle's make and model.
  5. Clear the DTC from the vehicle's computer using a diagnostic scan tool and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P2812 2017 GMC Sierra

The typical repair costs for addressing a Transmission Control Solenoid Valve 7 Control Circuit Open code can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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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 2017 GMC Sierra Code

1. What does the OBDII code P2812 mean on a 2017 GMC Sierra?

The P2812 code indicates an issue with the Transmission Control Solenoid Valve 7 Control Circuit, specifically an open circuit.

2. What are the common symptoms of the P2812 code on a 2017 GMC Sierra?

Symptoms may include harsh or delayed shifting, failure to shift gears, transmission slipping, or the check engine light turning on.

3. What causes the P2812 code to appear on a 2017 GMC Sierra?

Common causes include a faulty transmission control solenoid, damaged wiring or connectors in the solenoid circuit, or issues with the transmission control module (TCM).

4. Can I drive my 2017 GMC Sierra with the P2812 code?

Driving with this code is not recommended as it may lead to further transmission damage or unsafe driving conditions due to shifting issues.

5. How do I diagnose the P2812 code on a 2017 GMC Sierra?

Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting the wiring and connectors, testing the solenoid for continuity, and checking the TCM for proper operation.

6. How much does it cost to fix the P2812 code on a 2017 GMC Sierra?

Repair costs vary, but replacing a transmission control solenoid typically ranges from $150 to $400, including parts and labor. Additional costs may apply if wiring or the TCM needs repair.

7. Can a bad battery cause the P2812 code on a 2017 GMC Sierra?

While unlikely, a weak or failing battery can cause electrical issues that might affect the transmission control solenoid circuit.

8. How do I reset the P2812 code after repair on a 2017 GMC Sierra?

You can reset the code using an OBDII scanner after confirming the repair is complete. If the issue persists, the code may return.

9. What tools are needed to fix the P2812 code on a 2017 GMC Sierra?

You’ll need an OBDII scanner, a multimeter for testing electrical circuits, and basic hand tools for accessing the transmission components.

10. Can a software update fix the P2812 code on a 2017 GMC Sierra?

In some cases, a TCM software update from a dealership may resolve the issue if the problem is related to programming rather than hardware.

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