AutoCodes – GMC – P2764 2015 GMC Sierra

P2764 2015 GMC Sierra Code - Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage

Quick Answer

The Torque Converter Clutch (TCC) pressure control solenoid is part of the control solenoid valve assembly which has no serviceable parts. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Control Solenoid Valve Assembly. 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: P2764 2015 GMC Sierra indicates Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Control Solenoid Valve Assembly.
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 208

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
FAQs
Comments
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Code P2764 2015 GMC Sierra Description

The Torque Converter Clutch (TCC) pressure control solenoid is part of the control solenoid valve assembly which has no serviceable parts. The normally low TCC pressure control solenoid regulates oil pressure to the TCC regulator valve and TCC control valve. Increasing TCC pressure control solenoid oil pressure increases oil pressure to the torque converter to apply the clutch. The Transmission Control Module (TCM) varies the current to the TCC pressure control solenoid through a low-side driver. Increasing current to the TCC pressure control solenoid increases oil pressure by closing OFF the solenoid exhaust port. Decreasing current to the TCC pressure control solenoid decreases oil pressure by opening up the solenoid exhaust port. The TCC pressure control solenoid power is supplied by the Transmission Control Module through a high-side driver. The high-side driver protects the circuit and components from excessive current flow. If excessive current flow is detected, the high side driver will turn OFF. When the fault is corrected, the high-side driver will reset.
The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Module detects a short to ground on the TCC pressure control solenoid valve control circuit for 1 s.

OBDII Code P2764 2015 GMC Sierra - Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage - AutoCodes.com — P2764 2015 GMC Sierra Code - Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2764 2015 GMC Sierra?

Low transmission fluid level
Dirty transmission fluid
Faulty Control Solenoid Valve Assembly
Control Solenoid Valve Assembly harness or connectors
Control Solenoid Valve Assembly circuit is open or shorted

How to Fix the DTC P2764 2015 GMC Sierra?

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 P2764 2015 GMC Sierra 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 P2764 2015 GMC Sierra code?

Need more information on how to fix the P2764 2015 GMC Sierra code? Get Access to Factory Service Manuals

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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 P2764 2015 GMC Sierra Code

1. What does the OBDII code P2764 mean on a 2015 GMC Sierra?

P2764 indicates a problem with the Torque Converter Clutch (TCC) Pressure Control Solenoid Valve Control Circuit, specifically low voltage being detected.

2. What are the common symptoms of code P2764 in a GMC Sierra?

Symptoms may include poor fuel efficiency, transmission slipping, difficulty shifting gears, engine stalling at low speeds, or the Check Engine Light turning on.

3. What causes the P2764 code to appear?

Possible causes include a faulty TCC solenoid, damaged or corroded wiring/connectors, a malfunctioning transmission control module (TCM), or low transmission fluid levels.

4. Can low transmission fluid cause the P2764 code?

Yes, low or contaminated transmission fluid can affect the operation of the TCC solenoid and trigger the P2764 code.

5. How do I diagnose the P2764 code on a 2015 GMC Sierra?

Start by inspecting the transmission fluid level and condition, checking for damaged wiring or connectors near the TCC solenoid, and using an advanced scan tool to test solenoid operation and TCM signals.

6. Can I drive with the P2764 code active on my GMC Sierra?

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

7. How is the P2764 code repaired?

Repairs may include replacing the TCC solenoid, repairing or replacing damaged wiring, cleaning corroded connectors, or updating/replacing the TCM if necessary.

8. What tools are needed to fix the P2764 code?

You may need a scan tool with transmission diagnostic capabilities, a multimeter for testing circuits, and basic hand tools for accessing the transmission components.

9. How much does it cost to repair the P2764 code on a 2015 GMC Sierra?

Repair costs can range from $150 to $500 or more, depending on whether the issue is with the solenoid, wiring, or TCM.

10. Can a software update fix the P2764 code?

In some cases, a TCM software update may resolve issues causing the P2764 code, but this depends on the specific circumstances and diagnostic findings.