AutoCodesGMC – P2764 2017 GMC Sierra

P2764 2017 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 2017 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 224
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 P2764 2017 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 2017 GMC Sierra - Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage - AutoCodes.com
P2764 2017 GMC Sierra Code - Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage

What are the Possible Causes of the DTC P2764 2017 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 2017 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 2017 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 2017 GMC Sierra code?

Need more information on how to fix the P2764 2017 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 2017 GMC Sierra Code

1. What does the OBDII code P2764 mean on a 2017 GMC Sierra?

P2764 indicates a "Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage," meaning there’s an electrical issue in the solenoid circuit responsible for controlling the torque converter clutch.

2. What are the symptoms of the P2764 code in a 2017 GMC Sierra?

Common symptoms include delayed or harsh shifting, decreased fuel efficiency, transmission slipping, or the vehicle staying in a single gear (limp mode). The check engine light will also be illuminated.

3. What causes the P2764 code to appear in a 2017 GMC Sierra?

Potential causes include a faulty torque converter clutch solenoid, damaged or corroded wiring or connectors in the solenoid circuit, a failing transmission control module (TCM), or low transmission fluid levels.

4. Can I still drive my 2017 GMC Sierra with the P2764 code?

While the vehicle may still be drivable, continued operation with this code can lead to further transmission damage. It’s best to address the issue promptly to avoid costly repairs.

5. How do I diagnose the P2764 code on a 2017 GMC Sierra?

Diagnosis involves checking the transmission fluid level and condition, inspecting the wiring and connectors for damage, testing the solenoid with a multimeter, and scanning for additional transmission-related codes.

6. How can the P2764 code be fixed on a 2017 GMC Sierra?

Repairs may include replacing the torque converter clutch solenoid, repairing damaged wiring or connectors, updating or reprogramming the TCM, or replenishing and flushing the transmission fluid.

7. Could low transmission fluid cause the P2764 code in a 2017 GMC Sierra?

Yes, low or contaminated transmission fluid can lead to improper solenoid operation, which may trigger the P2764 code.

8. How much does it cost to fix the P2764 code on a 2017 GMC Sierra?

Repair costs can vary widely but may range from $200–$500 for solenoid replacement and up to $1,000 or more if significant transmission work is needed.

9. Can a bad transmission control module (TCM) trigger the P2764 code?

Yes, a malfunctioning TCM can fail to properly control the solenoid circuit, resulting in the P2764 code.

10. Is a software update needed to fix the P2764 code on a 2017 GMC Sierra?

In some cases, a TCM software update may resolve the issue if the problem is due to programming errors rather than hardware failure.

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