AutoCodes – GMC – P0751 2014 GMC Sierra

P0751 2014 GMC Sierra Code - Shift Solenoid Valve 1 Performance Stuck Off

Quick Answer

The shift solenoid 1 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: P0751 2014 GMC Sierra indicates Shift Solenoid Valve 1 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 340

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
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0751 2014 GMC Sierra Description

The shift solenoid 1 is part of the control solenoid valve assembly which has no serviceable parts. The control solenoid valve assembly is attached to the lower control valve body. The solenoid operates by the Transmission Control Module opening or closing the ground circuit. With the solenoid circuit grounded (solenoid on), the internal plunger and metering ball block the exhaust fluid creating signal fluid pressure. The signal fluid acts against the clutch select valve 2 to overcome the valve spring force moving it to the apply position, allowing the shift. The shift solenoid 1 is commanded ON in Park, Reverse, Neutral, and Drive 1 Engine Braking, and commanded OFF in Drive 1–6 gear ranges. The Diagnostic Trouble Code (DTC) will be set when the gear slip is greater than 400 RPM for 2 s.

OBDII Code P0751 2014 GMC Sierra - Shift Solenoid Valve 1 Performance Stuck Off - AutoCodes.com — P0751 2014 GMC Sierra Code - Shift Solenoid Valve 1 Performance Stuck Off

What does this mean?

What are the Possible Causes of the DTC P0751 2014 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 P0751 2014 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 does this mean?

Code Tech Notes

When a transmission solenoid is stuck off, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommended to change the transmission fluid and if possible, remove the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure, and that the transmission will need to be rebuilt or replaced.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0751 2014 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 P0751 2014 GMC Sierra code?

Need more information on how to fix the P0751 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0751 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P0751 2014 GMC Sierra Code

1. What does OBDII code P0751 for a 2014 GMC Sierra indicate?

The P0751 code specifically refers to Shift Solenoid Valve 1 Performance Stuck Off, signaling an issue with the transmission's first shift solenoid valve.

2. What are the common symptoms of P0751 in a 2014 GMC Sierra?

Common symptoms of P0751 include harsh or delayed shifting, transmission slipping, poor fuel economy, and the vehicle getting stuck in a single gear.

3. What are the possible causes of OBDII code P0751 in a 2014 GMC Sierra?

Causes of the P0751 code can include a faulty shift solenoid, low transmission fluid levels, dirty or contaminated transmission fluid, electrical issues, or a malfunctioning transmission control module.

4. How can I diagnose the P0751 code in my 2014 GMC Sierra?

Diagnosing the P0751 code typically involves checking the transmission fluid level and condition, inspecting the wiring and connectors related to the shift solenoid, and performing a thorough scan with an OBDII scanner to gather more data on the issue.

5. Can I continue driving my 2014 GMC Sierra with the P0751 code present?

It is not recommended to continue driving with the P0751 code active, as it can lead to further transmission damage and potentially unsafe driving conditions. It is best to address the issue promptly.

6. How can I repair the Shift Solenoid Valve 1 Performance Stuck Off issue in my 2014 GMC Sierra?

Repairing the P0751 code may involve replacing the faulty shift solenoid, performing a transmission fluid flush and filter change, verifying proper electrical connections, or seeking assistance from a professional mechanic for a more thorough inspection.

7. Is it possible to clear the P0751 code in a 2014 GMC Sierra without fixing the underlying issue?

While you can clear the code temporarily, it is crucial to address the root cause of the problem to prevent further damage to the transmission and ensure the vehicle operates correctly.

8. Are there any preventive maintenance tips to avoid OBDII code P0751 in a 2014 GMC Sierra?

Regularly servicing the transmission, keeping up with fluid changes, and addressing any minor transmission issues promptly can help prevent the occurrence of the P0751 code and other related problems.

9. How long does it typically take to repair the P0751 code in a 2014 GMC Sierra?

The repair time for the P0751 code can vary depending on the exact cause of the issue and the complexity of the repair. It is advisable to consult with a professional mechanic for an accurate estimate.

10. Can a DIY enthusiast with basic automotive knowledge fix the P0751 code in a 2014 GMC Sierra?

While some aspects of diagnosing and repairing the P0751 code may be within reach of a DIY enthusiast, it is recommended to consult with a professional mechanic for a proper diagnosis and repair to ensure the issue is fully resolved.