AutoCodes – GMC – P0796 2017 GMC Sierra

P0796 2017 GMC Sierra Code - Pressure Control Solenoid Valve 3 Stuck Off

Quick Answer

The clutch pressure control solenoid 3 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: P0796 2017 GMC Sierra indicates Pressure Control Solenoid Valve 3 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 480

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 P0796 2017 GMC Sierra Description

The clutch pressure control solenoid 3 is part of the control solenoid valve assembly, which has no serviceable parts. The Clutch Pressure Control Solenoid 3 regulates transmission fluid pressure to the CBR1/C 4-5-6 clutch regulator valve which controls pressure to the low/reverse clutch and the 4-5-6 clutch. The Transmission Control Module calculates gear ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The Transmission Control Module compares the expected transmission gear ratio to the calculated gear ratio for each commanded gear. The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Module has detected an incorrect gear ratio or neutral condition when the low and reverse clutch and the 4-5-6 clutch is commanded ON. This condition must occur 3 times.

OBDII Code P0796 2017 GMC Sierra - Pressure Control Solenoid Valve 3 Stuck Off - AutoCodes.com — P0796 2017 GMC Sierra Code - Pressure Control Solenoid Valve 3 Stuck Off

What does this mean?

What are the Possible Causes of the DTC P0796 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 P0796 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 P0796 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 P0796 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 P0796 2017 GMC Sierra Code

1. What does the OBDII code P0796 mean on a 2017 GMC Sierra?

P0796 indicates that the transmission control module (TCM) has detected that Pressure Control Solenoid Valve 3 is stuck in the "Off" position, causing improper transmission operation.

2. What are the common symptoms of a P0796 code in a GMC Sierra?

Symptoms may include harsh or delayed shifting, transmission slipping, overheating, poor fuel economy, or the vehicle going into limp mode.

3. What causes a P0796 code in a 2017 GMC Sierra?

Common causes include a faulty pressure control solenoid, dirty or low transmission fluid, clogged transmission passages, wiring or connector issues, or a malfunctioning transmission control module.

4. Can I drive my 2017 GMC Sierra with a P0796 code?

Driving with a P0796 code is not recommended, as it can lead to further transmission damage and unsafe driving conditions due to erratic shifting.

5. How do I fix a P0796 code on a GMC Sierra?

Repairs may include replacing the faulty pressure control solenoid, flushing and refilling the transmission fluid, cleaning or repairing wiring and connectors, or reprogramming or replacing the TCM.

6. How much does it cost to fix the P0796 code on a 2017 GMC Sierra?

Repair costs can vary widely, from $150 to $400 for solenoid replacement to $1,000 or more if more extensive transmission repairs are needed.

7. How can I diagnose the P0796 code on my GMC Sierra?

Diagnosis involves scanning for additional codes, checking the condition and level of transmission fluid, inspecting the solenoid and wiring, and performing a pressure test on the transmission.

8. Can low transmission fluid cause a P0796 code in a GMC Sierra?

Yes, low or dirty transmission fluid can cause improper solenoid operation, leading to a P0796 code.

9. Does the P0796 code mean I need a new transmission for my GMC Sierra?

Not necessarily. The issue could be resolved by replacing the solenoid or addressing fluid or electrical problems. A full transmission replacement is only needed in severe cases.

10. How can I prevent a P0796 code from happening again?

Regularly maintain your transmission by changing the fluid and filter at recommended intervals, inspecting wiring and connectors, and addressing transmission issues promptly.