P0797 2016 GMC Sierra Code - Pressure Control Solenoid Valve 3 Stuck On
Quick Answer
The P0797 diagnostic trouble code (DTC) for a 2016 GMC Sierra refers to the Pressure Control Solenoid Valve 3 being stuck on. Common causes include Mechanical failure of the Pressure Control Solenoid Valve 3, Electrical issues with the solenoid or related wiring, Clogged transmission fluid passage. 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
- P0797 2016 GMC Sierra indicates Pressure Control Solenoid Valve 3 Stuck On.
- Common causes
- Common causes include Mechanical failure of the Pressure Control Solenoid Valve 3, Electrical issues with the solenoid or related wiring, Clogged transmission fluid passage.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0797 2016 GMC Sierra Description
The P0797 diagnostic trouble code (DTC) for a 2016 GMC Sierra refers to the Pressure Control Solenoid Valve 3 being stuck on. This code indicates that there is an issue with the solenoid valve responsible for controlling the hydraulic pressure in the transmission. The transmission control module (TCM) uses this solenoid to regulate the pressure in the transmission, which is crucial for smooth shifting and overall performance.
Common Causes of P0797 2016 GMC Sierra
- Mechanical failure of the Pressure Control Solenoid Valve 3
- Electrical issues with the solenoid or related wiring
- Clogged transmission fluid passage
- Faulty Transmission Control Module (TCM)
- Low transmission fluid level or poor quality fluid
Symptoms of P0797 2016 GMC Sierra
- Erratic shifting or delayed gear engagement
- Harsh or rough shifting
- Transmission slipping
- Reduced fuel efficiency
- Illumination of the Check Engine Light
How to Fix P0797 2016 GMC Sierra
- Begin by conducting a thorough diagnostic scan to confirm the P0797 code and identify any other related issues.
- Inspect the Pressure Control Solenoid Valve 3 for any signs of damage or malfunction.
- Check the transmission fluid level and quality, and perform a fluid flush and filter replacement if necessary.
- Test the TCM and related wiring for proper functionality and repair or replace as needed.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0797 2016 GMC Sierra
The typical repair costs for addressing a Pressure Control Solenoid Valve 3 stuck on issue can vary depending on the specific cause and the extent of the repairs needed. On average, the parts for this repair can range from $100 to $300, while labor costs may range from $150 to $400. Overall, the total cost could be anywhere from $250 to $700. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the shop's labor rates. It's recommended to obtain quotes from local auto repair shops for a more accurate cost estimate.
Need more information about the P0797 2016 GMC Sierra code?
Need more information on how to fix the P0797 2016 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0797 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0797 2016 GMC Sierra Code
1. What does the OBDII code P0797 mean on a 2016 GMC Sierra?
P0797 indicates that the Pressure Control Solenoid Valve 3 in the transmission is stuck in the "on" position, affecting the vehicle's ability to shift gears properly.
2. What are the common symptoms of a P0797 code on a 2016 GMC Sierra?
Symptoms may include harsh or erratic shifting, slipping gears, decreased fuel efficiency, transmission overheating, and the check engine light being illuminated.
3. What causes the P0797 code to appear on a 2016 GMC Sierra?
Common causes include a faulty pressure control solenoid, low or dirty transmission fluid, a clogged transmission filter, internal transmission damage, or wiring and connection issues.
4. Can low transmission fluid cause the P0797 code on a 2016 GMC Sierra?
Yes, low or contaminated transmission fluid can cause the solenoid to malfunction, potentially triggering the P0797 code.
5. How do you diagnose a P0797 code on a 2016 GMC Sierra?
Diagnosis involves checking the transmission fluid level and condition, inspecting the wiring and connectors to the solenoid, testing the solenoid’s electrical resistance, and possibly performing a pressure test on the transmission.
6. Can you drive a 2016 GMC Sierra with a P0797 code?
It’s not recommended, as driving with this code can cause further damage to the transmission and lead to unsafe driving conditions due to shifting issues.
7. How is a P0797 code fixed on a 2016 GMC Sierra?
Repairs may include replacing the faulty pressure control solenoid, flushing and refilling the transmission fluid, replacing the transmission filter, fixing damaged wiring, or repairing internal transmission components.
8. How much does it cost to repair a P0797 code on a 2016 GMC Sierra?
Costs vary depending on the issue, ranging from $150 to $400 for solenoid replacement or fluid service, and up to several thousand dollars if internal transmission repairs are required.
9. Can a dirty transmission filter cause the P0797 code on a 2016 GMC Sierra?
Yes, a clogged or dirty transmission filter can restrict fluid flow, causing the solenoid to stick and triggering the P0797 code.
10. How can I prevent the P0797 code from occurring on my 2016 GMC Sierra?
Regular transmission maintenance, including fluid and filter changes at recommended intervals, can help prevent solenoid issues and reduce the likelihood of this code appearing.
Discuss the causes and fixes for P0797 2016 GMC Sierra OBDII Code
Code P0797 2016 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.