AutoCodes – GMC – P2812 GMC

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

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: P2812 GMC indicates Transmission Control Solenoid Valve 7 Control Circuit Open.
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 742

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P2812 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 P2812 GMC - Transmission Control Solenoid Valve 7 Control Circuit Open - AutoCodes.com — P2812 GMC Code - Transmission Control Solenoid Valve 7 Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2812 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 P2812 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 P2812 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.

Need more information about the P2812 GMC code?

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Information for Specific GMC Models

P2812 2014 GMC Sierra — Transmission Control Solenoid Valve 7 Control Circuit Open
P2812 2015 GMC Sierra — Transmission Control Solenoid Valve 7 Control Circuit Open
P2812 2016 GMC Sierra — Transmission Control Solenoid Valve 7 Control Circuit Open
P2812 2017 GMC Sierra — Transmission Control Solenoid Valve 7 Control Circuit Open
P2812 2018 GMC Sierra — Transmission Control Solenoid Valve 7 Control Circuit Open

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.