AutoCodesGMC – P2815 GMC

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

Quick Answer

The Transmission Control Solenoid Valve Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control 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
P2815 GMC indicates Transmission Control Solenoid Valve 7 Control Circuit High Voltage.
Common causes
Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control 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.
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Code Popularity 334
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
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Code P2815 GMC Description

The Transmission Control Solenoid Valve Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the Transmission Control Solenoid Valve, which ultimately decreases line pressure. The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM). The Diagnostic Trouble Code (DTC) is set when the Transmission Control Solenoid Valve Control Circuit commanded state does not match the actual state for greater than 1 s.
OBDII Code P2815 GMC - Transmission Control Solenoid Valve 7 Control Circuit High Voltage - AutoCodes.com
P2815 GMC Code - Transmission Control Solenoid Valve 7 Control Circuit High Voltage

What are the Possible Causes of the DTC P2815 GMC?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty Transmission Control Solenoid Valve
  • Transmission Control Solenoid Valve harness is open or shorted
  • Transmission Control Solenoid Valve circuit poor electrical connection
  • Faulty Transmission Control Module (TCM)

How to Fix the DTC P2815 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2815 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Information for Specific GMC Models

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 GMC Code

What does the OBDII code P2815 mean for a GMC vehicle?

P2815 indicates a high voltage issue in the Transmission Control Solenoid Valve 7 Control Circuit, which is responsible for managing fluid flow and gear shifting in the transmission.

What are the common symptoms of the P2815 code?

Symptoms may include erratic shifting, transmission slipping, reduced fuel efficiency, or the vehicle being stuck in one gear.

What causes the P2815 code in GMC vehicles?

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

How can I diagnose the P2815 code?

Start by inspecting the wiring and connectors for damage or corrosion, test the solenoid valve for proper operation, and use a multimeter to check for high voltage in the affected circuit.

Can I drive my GMC vehicle with the P2815 code?

Driving with this code is not recommended, as transmission issues could worsen, potentially leading to costly repairs or unsafe driving conditions.

How is the P2815 code fixed?

Repairs may include replacing the faulty solenoid valve, repairing damaged wiring or connectors, or reprogramming or replacing the transmission control module.

How much does it cost to repair the P2815 code?

Repair costs vary but typically range from $150 to $500, depending on whether the solenoid valve or wiring needs replacement and labor costs.

Is the P2815 code related to transmission fluid?

While not directly related, low or contaminated transmission fluid can exacerbate transmission problems and should be checked during diagnosis.

How can I prevent the P2815 code from occurring?

Regular transmission maintenance, including fluid checks and ensuring wiring and connections remain intact, can help prevent this code.

Will clearing the P2815 code resolve the issue?

Clearing the code without addressing the underlying problem will not fix the issue, and the code is likely to return.

Discuss the causes and fixes for P2815 GMC OBDII Code

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