AutoCodes – GMC – P0964 2017 GMC Sierra

P0964 2017 GMC Sierra Code - Pressure Control Solenoid Valve 2 Control Circuit Open

Quick Answer

The pressure control solenoid 2 is part of the control solenoid valve assembly which has no serviceable parts. Common causes include Low transmission fluid, Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly harness is open or shorted. 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: P0964 2017 GMC Sierra indicates Pressure Control Solenoid Valve 2 Control Circuit Open.
Common causes: Common causes include Low transmission fluid, Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly harness is open or shorted.
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 245

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 P0964 2017 GMC Sierra Description

The pressure control solenoid 2 is part of the control solenoid valve assembly which has no serviceable parts. The normally high-pressure control solenoid 2 regulates and directs the pressure control solenoid 2 oil pressure to the 3-5 reverse clutch regulator valve and 3-5 reverse clutch boost valve. Increasing pressure control solenoid 2 pressure increases pressure to the 3-5 reverse clutch. The Transmission Control Module (TCM) varies the current to the pressure control solenoid 2 through a low side driver. Decreasing the current to the pressure control solenoid 2 increases pressure control solenoid 2 oil pressure by closing OFF the solenoid exhaust port. Increasing the current to the pressure control solenoid 2 decreases pressure control solenoid 2 oil pressure by opening the solenoid exhaust port. Pressure control solenoid 2 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 an open on the pressure control solenoid valve 2 control circuit for 1 s.

OBDII Code P0964 2017 GMC Sierra - Pressure Control Solenoid Valve 2 Control Circuit Open - AutoCodes.com — P0964 2017 GMC Sierra Code - Pressure Control Solenoid Valve 2 Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P0964 2017 GMC Sierra?

Low transmission fluid
Faulty Control Solenoid Valve Assembly
Control Solenoid Valve Assembly harness is open or shorted
Control Solenoid Valve Assembly circuit poor electrical connection

How to Fix the DTC P0964 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 P0964 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 P0964 2017 GMC Sierra code?

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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 P0964 2017 GMC Sierra Code

1. What does the OBDII code P0964 mean on a 2017 GMC Sierra?

P0964 indicates an open circuit in the Pressure Control Solenoid Valve 2 control circuit, which impacts the transmission's ability to regulate hydraulic pressure.

2. What are the symptoms of a P0964 code on a 2017 GMC Sierra?

Symptoms may include harsh or erratic shifting, transmission slipping, reduced fuel efficiency, and the Check Engine Light illuminating.

3. What causes the P0964 code on a 2017 GMC Sierra?

Common causes include a faulty pressure 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 a P0964 code?

Driving with a P0964 code is not recommended as it can lead to further transmission damage and unsafe driving conditions due to erratic shifting.

5. How is the P0964 code diagnosed?

A mechanic will use a scan tool to confirm the code, inspect the solenoid wiring and connectors, test the resistance of the solenoid, and check for any additional transmission-related codes.

6. How do I fix the P0964 code on a 2017 GMC Sierra?

Repairs may involve replacing a faulty pressure control solenoid, repairing or replacing damaged wiring/connectors, or reprogramming or replacing the TCM.

7. How much does it cost to fix a P0964 code on a 2017 GMC Sierra?

Repair costs can vary, typically ranging from $150 to $400, depending on whether the issue is with the solenoid, wiring, or TCM.

8. Can a faulty battery cause the P0964 code on a 2017 GMC Sierra?

While unlikely, a weak or failing battery can occasionally cause electrical issues that may contribute to transmission control circuit faults.

9. Does the P0964 code mean the transmission needs to be replaced?

Not necessarily. The issue is often related to the solenoid or wiring and can usually be repaired without replacing the entire transmission.

10. How can I prevent the P0964 code from recurring on my 2017 GMC Sierra?

Regular maintenance, including inspecting transmission wiring and connectors, ensuring proper fluid levels, and addressing any electrical issues promptly, can help prevent this code.