AutoCodes – Chevrolet – P0756 2018 Chevrolet Silverado

P0756 2018 Chevrolet Silverado Code - Shift Solenoid Valve 2 Performance Stuck Off

Quick Answer

The transmission fluid pressure switch, also known as the pressure switch manifold, is a multiple switch assembly made up of 3 normally open pressure switches and 1 normally closed pressure switch. 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: P0756 2018 Chevrolet Silverado indicates Shift Solenoid Valve 2 Performance Stuck Off.
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 296

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 P0756 2018 Chevrolet Silverado Description

The transmission fluid pressure switch, also known as the pressure switch manifold, is a multiple switch assembly made up of 3 normally open pressure switches and 1 normally closed pressure switch. Pressure switch 1 monitor shift valve 1 positioning, pressure switch 2 monitors shift valve 2 positioning and pressure switch 3 monitors shift valve 3 positionings. The normally open pressure switches 1–3 communicate the positioning to the Transmission Control Module (TCM). The position of shift valves 1–3 is controlled by 3 normally closed shift solenoid valves 1–3. When energized, the shift solenoid valves directly control the main pressure to shift valve 1, 2, or 3, which strokes the shift valve. When the shift valve is stroked, an exhaust passage is blocked and fluid pressure to the pressure switch increases. The Diagnostic Trouble Code (DTC) will be set if the shift solenoid valve 2 is commanded on and pressure switch 2 remains off for 5–12 s, depending on the transmission fluid temperature.

OBDII Code P0756 2018 Chevrolet Silverado - Shift Solenoid Valve 2 Performance Stuck Off - AutoCodes.com — P0756 2018 Chevrolet Silverado Code - Shift Solenoid Valve 2 Performance Stuck Off

What does this mean?

What are the Possible Causes of the DTC P0756 2018 Chevrolet Silverado?

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
Faulty Transmission Control Module (TCM)

How to Fix the DTC P0756 2018 Chevrolet Silverado?

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 P0756 2018 Chevrolet Silverado 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 P0756 2018 Chevrolet Silverado code?

Need more information on how to fix the P0756 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the 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 P0756 2018 Chevrolet Silverado Code

1. What does the OBDII code P0756 mean on a 2018 Chevrolet Silverado?

P0756 indicates "Shift Solenoid Valve 2 Performance Stuck Off," meaning the transmission's shift solenoid is not operating as expected, potentially causing shifting issues.

2. What are the common symptoms of code P0756 in a 2018 Chevrolet Silverado?

Symptoms include harsh or delayed shifting, transmission stuck in one gear, reduced fuel efficiency, or the vehicle going into limp mode.

3. What causes the P0756 code in a 2018 Chevrolet Silverado?

Common causes include a faulty shift solenoid, dirty or low transmission fluid, wiring issues, or internal transmission problems like a stuck valve or worn components.

4. Can I drive my 2018 Chevrolet Silverado with the P0756 code active?

Driving with this code is not recommended, as it can cause further transmission damage and may lead to unsafe driving conditions.

5. How do I diagnose the P0756 code on a 2018 Chevrolet Silverado?

Start by checking the transmission fluid for proper level and condition, inspect wiring and connectors for damage, and test the shift solenoid for proper operation using a scan tool or multimeter.

6. How much does it cost to repair the P0756 code on a 2018 Chevrolet Silverado?

Repair costs vary based on the issue, ranging from $100â€“$300 for solenoid replacement to over $1,000 if major internal transmission repairs are needed.

7. Can low transmission fluid cause the P0756 code in a 2018 Chevrolet Silverado?

Yes, low or dirty transmission fluid can cause the solenoid to malfunction, triggering the P0756 code.

8. How do I reset the P0756 code after repairs on my 2018 Chevrolet Silverado?

After completing repairs, use an OBDII scan tool to clear the code, or disconnect the battery for a few minutes to reset the system.

9. Do I need to replace the transmission to fix the P0756 code in my 2018 Chevrolet Silverado?

Not necessarily. Many cases can be resolved by replacing the shift solenoid, flushing the transmission fluid, or repairing electrical issues.

10. How can I prevent the P0756 code from occurring in my 2018 Chevrolet Silverado?

Regularly check and replace transmission fluid as needed, perform scheduled maintenance, and address any transmission issues promptly to prevent solenoid failures.