P0796 2018 GMC Sierra Code - Pressure Control Solenoid Valve 3 Stuck Off
Quick Answer
The P0796 diagnostic trouble code (DTC) for a 2018 GMC Sierra refers to the Pressure Control Solenoid Valve 3 being stuck off. Common causes include Faulty pressure control solenoid valve 3, Wiring issues or electrical faults, Malfunctioning TCM. 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 2018 GMC Sierra indicates Pressure Control Solenoid Valve 3 Stuck Off.
- Common causes
- Common causes include Faulty pressure control solenoid valve 3, Wiring issues or electrical faults, Malfunctioning TCM.
- 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 P0796 2018 GMC Sierra Description
The P0796 diagnostic trouble code (DTC) for a 2018 GMC Sierra refers to the Pressure Control Solenoid Valve 3 being stuck off. This code indicates that the transmission control module (TCM) has detected a malfunction with the pressure control solenoid valve 3, which is responsible for regulating hydraulic pressure within the transmission. When the solenoid valve is stuck off, it can lead to improper pressure levels, affecting the shifting performance of the transmission.
Common Causes of P0796 2018 GMC Sierra
- Faulty pressure control solenoid valve 3
- Wiring issues or electrical faults
- Malfunctioning TCM
- Clogged valve body
- Low transmission fluid levels
Symptoms of P0796 2018 GMC Sierra
- Harsh or delayed shifting
- Erratic gear changes
- Transmission slipping
- Transmission overheating
- Illumination of the Check Engine Light
How to Fix P0796 2018 GMC Sierra
- Perform a thorough diagnostic scan to confirm the P0796 code and identify the specific cause of the issue.
- Inspect the pressure control solenoid valve 3 for proper operation and replace it if necessary.
- Check the wiring harness for any damage or loose connections and repair as needed.
- Verify the transmission fluid level and quality, topping up or replacing it if low or contaminated.
- Clear the DTC and test drive the vehicle to ensure proper transmission operation.
Cost to Fix P0796 2018 GMC Sierra
The typical repair costs for addressing a P0796 code can vary depending on the specific cause of the issue. Replacement of the pressure control solenoid valve 3 and related parts may cost between $200 to $500, including parts and labor. Additional diagnostic fees and labor rates at auto repair shops can range from $80 to $150 per hour. It is advisable to consult with a professional mechanic to obtain an accurate estimate based on your vehicle's make and model, as well as the extent of the repair needed.
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Frequently Asked Questions about P0796 2018 GMC Sierra Code
1. What does the OBDII code P0796 mean on a 2018 GMC Sierra?
The P0796 code indicates that the transmission's pressure control solenoid valve 3 is stuck in the "off" position, affecting hydraulic pressure regulation.
2. What are the common symptoms of P0796 on a 2018 GMC Sierra?
Symptoms may include harsh or delayed shifting, transmission slipping, reduced fuel economy, the transmission going into limp mode, and the check engine light turning on.
3. What causes the P0796 code to appear?
Common causes include a faulty pressure control solenoid, low or dirty transmission fluid, a clogged transmission filter, internal transmission issues, or electrical problems like damaged wiring or connectors.
4. Can I drive my 2018 GMC Sierra with the P0796 code?
Driving with this code is not recommended as it can lead to further transmission damage or unsafe driving conditions due to shifting issues.
5. How do I diagnose the P0796 code on my GMC Sierra?
Diagnosis involves checking the transmission fluid level and condition, inspecting wiring and connectors, testing the solenoid for proper operation, and performing a detailed scan with a diagnostic tool.
6. How much does it cost to fix the P0796 code?
Repair costs can vary widely, ranging from $150 to $400 for a solenoid replacement, but internal transmission repairs could cost $1,000 or more depending on the extent of the damage.
7. How do I fix the P0796 code on my 2018 GMC Sierra?
Repairs may involve replacing the pressure control solenoid, cleaning or replacing the transmission filter, flushing the transmission fluid, or repairing damaged wiring or connectors.
8. Can low transmission fluid cause the P0796 code?
Yes, low or dirty transmission fluid can cause insufficient hydraulic pressure, leading to the P0796 code.
9. Will resetting the check engine light fix the P0796 code?
No, simply clearing the code won't fix the underlying issue. Proper diagnosis and repair are necessary to resolve the problem.
10. Can a clogged transmission filter cause the P0796 code?
Yes, a clogged transmission filter can restrict fluid flow, leading to hydraulic pressure issues and triggering the P0796 code.
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