AutoCodes – GMC – P0796 2016 GMC Sierra

P0796 2016 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 2016 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 405

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 2016 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 2016 GMC Sierra - Pressure Control Solenoid Valve 3 Stuck Off - AutoCodes.com — P0796 2016 GMC Sierra Code - Pressure Control Solenoid Valve 3 Stuck Off

What does this mean?

What are the Possible Causes of the DTC P0796 2016 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 2016 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 2016 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 2016 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 2016 GMC Sierra Code

1. What does the OBDII code P0796 indicate on a 2016 GMC Sierra?

The P0796 code on a 2016 GMC Sierra indicates that the Pressure Control Solenoid "C" is stuck in the off position, which can affect the transmission's ability to control fluid pressure accurately.

2. What are common symptoms of code P0796 in a 2016 GMC Sierra?

Common symptoms include transmission slipping, harsh shifting, transmission overheating, decreased fuel efficiency, and the vehicle may enter limp mode.

3. What can cause the P0796 code to appear in a 2016 GMC Sierra?

Possible causes include a faulty pressure control solenoid, dirty or low transmission fluid, blockages in the transmission fluid passages, or issues with the transmission control module.

4. How is the P0796 code diagnosed in a 2016 GMC Sierra?

Diagnosis involves using a scan tool to confirm the code, visually inspecting the solenoid and related wiring, checking the transmission fluid level and condition, and possibly conducting a solenoid resistance test to determine if a replacement is needed.

5. What are some steps to repair the P0796 code on a 2016 GMC Sierra?

Repair steps may include replacing the pressure control solenoid, changing the transmission fluid and filter if dirty or contaminated, repairing any damaged wiring or connectors, and resetting the transmission control module.

6. Is it safe to drive a 2016 GMC Sierra with the P0796 code?

Driving with the P0796 code can lead to further transmission damage. It is advisable to address the issue promptly to avoid potential safety risks and more costly repairs.

7. How urgent is it to fix a P0796 code on a 2016 GMC Sierra?

It is quite urgent to fix a P0796 code as ignoring it can lead to significant transmission issues, which might result in the vehicle becoming inoperable or unsafe to drive.

8. Can a P0796 code affect the fuel economy of a 2016 GMC Sierra?

Yes, a P0796 code can affect the vehicle's fuel economy. Improper transmission fluid pressure can lead to inefficient gear shifts, which in turn can increase fuel consumption.

9. What tools are needed to diagnose the P0796 code on a 2016 GMC Sierra?

Tools needed may include a diagnostic scan tool, a digital multimeter, and possibly a pressure gauge to check transmission fluid pressures accurately.