P0797 2017 GMC Sierra Code - Pressure Control Solenoid Valve 3 Stuck On
Quick Answer
The P0797 diagnostic trouble code (DTC) in a 2017 GMC Sierra indicates that the Pressure Control Solenoid Valve 3 is stuck in the on position. Common causes include Faulty pressure control solenoid valve, Wiring or connector issues, Low transmission fluid levels. 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 2017 GMC Sierra indicates Pressure Control Solenoid Valve 3 Stuck On.
- Common causes
- Common causes include Faulty pressure control solenoid valve, Wiring or connector issues, Low transmission fluid levels.
- 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 P0797 2017 GMC Sierra Description
The P0797 diagnostic trouble code (DTC) in a 2017 GMC Sierra indicates that the Pressure Control Solenoid Valve 3 is stuck in the on position. This valve is responsible for regulating the hydraulic pressure within the transmission, which is crucial for proper gear shifting and overall transmission performance. When this solenoid valve is stuck on, it can lead to various issues with the transmission's operation.
Common Causes of P0797 2017 GMC Sierra
- Faulty pressure control solenoid valve
- Wiring or connector issues
- Low transmission fluid levels
- Internal transmission problems
- Electrical issues
Symptoms of P0797 2017 GMC Sierra
- Harsh or delayed shifting
- Erratic transmission behavior
- Transmission slipping
- Failure to engage into gear properly
- Limp mode activation
How to Fix P0797 2017 GMC Sierra
- Perform a thorough diagnostic scan to confirm the P0797 code and identify the specific cause of the issue.
- Inspect the pressure control solenoid valve 3 for proper operation and replace if necessary.
- Check the wiring and connectors associated with the solenoid valve for any damage or corrosion, repairing or replacing as needed.
- Ensure that the transmission fluid levels are at the correct level and top up if low.
- Test drive the vehicle after repairs to confirm that the issue has been resolved and clear the DTC from the vehicle's computer.
Cost to Fix P0797 2017 GMC Sierra
The typical repair costs for addressing the P0797 code in a 2017 GMC Sierra can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may charge less. For a more accurate estimate, it's recommended to inquire with local auto repair shops.
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Frequently Asked Questions about P0797 2017 GMC Sierra Code
What does the OBDII code P0797 mean on a 2017 GMC Sierra?
The P0797 code indicates that the Transmission Control Module (TCM) has detected that Pressure Control Solenoid Valve 3 is stuck in the "on" position, causing improper transmission operation.
What are the symptoms of a P0797 code in a 2017 GMC Sierra?
Symptoms may include harsh or delayed shifting, transmission slipping, poor fuel economy, a stuck gear, or the vehicle going into limp mode.
What causes the P0797 code to appear on a 2017 GMC Sierra?
Common causes include a faulty pressure control solenoid, low or dirty transmission fluid, a clogged transmission filter, wiring issues, or a malfunctioning TCM.
Can I drive my 2017 GMC Sierra with a P0797 code?
It is not recommended to drive with this code active, as continued operation could lead to severe transmission damage or unsafe driving conditions.
How can I diagnose the P0797 code in my 2017 GMC Sierra?
Start by checking the transmission fluid level and condition, inspecting the wiring and connectors for damage, and testing the solenoid with a scan tool capable of transmission diagnostics.
How do I fix the P0797 code on a 2017 GMC Sierra?
Repairs may include replacing the pressure control solenoid, cleaning or replacing the transmission filter, repairing damaged wiring, or updating/reprogramming the TCM.
How much does it cost to repair a P0797 code on a 2017 GMC Sierra?
The repair cost can range from $200 to $500 for solenoid replacement, while more extensive repairs, like TCM reprogramming or additional parts, could increase the cost.
Can low transmission fluid cause a P0797 code in a 2017 GMC Sierra?
Yes, low or dirty transmission fluid can cause the solenoid to malfunction, leading to the P0797 code.
Is a transmission flush necessary to fix the P0797 code in a 2017 GMC Sierra?
A transmission flush may help if the problem is due to dirty or contaminated fluid, but it should only be done if recommended after diagnosing the issue.
Do I need to replace the transmission to fix the P0797 code on my 2017 GMC Sierra?
In most cases, replacing the transmission is unnecessary. The issue is often resolved by repairing or replacing the solenoid, fixing wiring problems, or addressing fluid issues.
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