Engine-CodesGMC – P2815 2017 GMC Sierra

P2815 2017 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit High Voltage

Quick Answer

The P2815 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the Transmission Control Solenoid Valve 7 Control Circuit High Voltage. Common causes include Faulty transmission control solenoid valve 7, Damaged wiring or connectors in the circuit, 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
P2815 2017 GMC Sierra indicates Transmission Control Solenoid Valve 7 Control Circuit High Voltage.
Common causes
Common causes include Faulty transmission control solenoid valve 7, Damaged wiring or connectors in the circuit, 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.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P2815 2017 GMC Sierra Description

The P2815 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the Transmission Control Solenoid Valve 7 Control Circuit High Voltage. This code specifically points to an issue with the electrical circuit that controls the transmission solenoid valve 7, which is responsible for regulating the flow of transmission fluid within the transmission system. The transmission control module (TCM) monitors the voltage levels in the circuit, and if it detects that the voltage is higher than normal, it will trigger the P2815 code.

OBDII Code P2815 2017 GMC Sierra - Transmission Control Solenoid Valve 7 Control Circuit High Voltage
P2815 2017 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit High Voltage

Common Causes of P2815 2017 GMC Sierra

  1. Faulty transmission control solenoid valve 7
  2. Damaged wiring or connectors in the circuit
  3. Malfunctioning transmission control module (TCM)
  4. Software issues within the TCM
  5. Corrosion or poor connections in the circuit

Symptoms of P2815 2017 GMC Sierra

  1. Erratic shifting behavior
  2. Harsh or delayed gear shifts
  3. Transmission slipping
  4. Reduced fuel efficiency
  5. Illumination of the check engine light

How to Fix P2815 2017 GMC Sierra

  1. Begin by conducting a thorough inspection of the transmission control solenoid valve 7 and its associated wiring and connectors.
  2. Test the solenoid valve for proper functionality using a multimeter to check for continuity and resistance.
  3. Inspect the TCM for any signs of damage or malfunction, and perform a software update if necessary.
  4. Repair or replace any damaged wiring or connectors in the circuit.
  5. Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P2815 2017 GMC Sierra

The typical repair costs for addressing the P2815 code on a 2017 GMC Sierra can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. For a more accurate estimate, it is recommended to consult with local auto repair shops.

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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 P2815 2017 GMC Sierra Code

1. What does the OBDII code P2815 mean on a 2017 GMC Sierra?

Code P2815 indicates a high voltage issue in the Transmission Control Solenoid Valve 7 Control Circuit, which is responsible for regulating hydraulic pressure in the transmission.

2. What are common symptoms of the P2815 code on a 2017 GMC Sierra?

Symptoms may include harsh or delayed shifting, transmission slipping, decreased fuel efficiency, or the vehicle going into limp mode.

3. What causes the P2815 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 a malfunctioning transmission control module (TCM).

4. Can I drive my 2017 GMC Sierra with the P2815 code?

While the vehicle may still be drivable, continued use with this code can cause further damage to the transmission. It's best to address the issue promptly.

5. How is the P2815 code diagnosed on a 2017 GMC Sierra?

A mechanic will use an OBDII scanner to confirm the code, inspect related wiring and connectors, test the solenoid for proper function, and check the TCM for faults.

6. How do you fix the P2815 code on a 2017 GMC Sierra?

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

7. What tools are needed to troubleshoot the P2815 code on a 2017 GMC Sierra?

Diagnosing this code typically requires an OBDII scanner, a multimeter for testing electrical circuits, and possibly a transmission pressure gauge.

8. How much does it cost to fix the P2815 code on a 2017 GMC Sierra?

Repair costs vary but may range from $200 to $500 for solenoid replacement, with additional costs if wiring or TCM replacement is required.

9. Can a weak battery cause the P2815 code on a 2017 GMC Sierra?

A weak battery is unlikely to directly cause this code, but voltage irregularities can sometimes affect transmission control systems. It's worth checking the battery and charging system.

10. Will clearing the P2815 code fix the issue on a 2017 GMC Sierra?

Clearing the code will remove it temporarily, but if the underlying issue isn't resolved, the code will likely return.

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