Engine-CodesGMC – P2817 2017 GMC Sierra

P2817 2017 GMC Sierra Code - Transmission Control Solenoid Valve 8 Stuck Off

Quick Answer

The P2817 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates an issue with the Transmission Control Solenoid Valve 8 being stuck off. Common causes include Electrical faults, Mechanical failures within the solenoid valve, 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
P2817 2017 GMC Sierra indicates Transmission Control Solenoid Valve 8 Stuck Off.
Common causes
Common causes include Electrical faults, Mechanical failures within the solenoid valve, 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.
Table of contents Created and updated by William Orellana on Sep 29, 2024
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Code P2817 2017 GMC Sierra Description

The P2817 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates an issue with the Transmission Control Solenoid Valve 8 being stuck off. This solenoid valve is a crucial component of the transmission system, responsible for controlling the flow of transmission fluid to engage or disengage specific gears. When the solenoid valve is stuck off, it means that it is not functioning properly, which can lead to significant performance issues with the vehicle's transmission.

OBDII Code P2817 2017 GMC Sierra - Transmission Control Solenoid Valve 8 Stuck Off
P2817 2017 GMC Sierra Code - Transmission Control Solenoid Valve 8 Stuck Off

Common Causes of P2817 2017 GMC Sierra

  1. Electrical faults
  2. Mechanical failures within the solenoid valve
  3. Low transmission fluid levels
  4. Contamination within the transmission fluid

Symptoms of P2817 2017 GMC Sierra

  1. Harsh shifting
  2. Delayed shifting
  3. Erratic shifting patterns
  4. Transmission slipping
  5. Transmission not engaging

How to Fix P2817 2017 GMC Sierra

  1. Perform a diagnostic scan to retrieve the trouble code and identify the specific issue.
  2. Inspect the transmission system for any visible damage or leaks.
  3. Test the electrical connections to the Transmission Control Solenoid Valve 8.
  4. Consider a transmission fluid flush and refill to address potential contamination.
  5. Replace the solenoid valve if necessary.

Cost to Fix P2817 2017 GMC Sierra

The cost of repairing a Transmission Control Solenoid Valve 8 stuck off issue can vary depending on the extent of the damage and the specific repairs needed. On average, the parts for a solenoid valve replacement can range from $100 to $300, while labor costs can add another $100 to $200. Overall, the total repair cost for this issue may fall between $200 and $500. However, it's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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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 P2817 2017 GMC Sierra Code

1. What does the OBDII code P2817 mean on a 2017 GMC Sierra?

P2817 indicates that the Transmission Control Solenoid Valve 8 is stuck in the "off" position, causing potential issues with shifting and transmission performance.

2. What are the common symptoms of code P2817 on a 2017 GMC Sierra?

Symptoms may include harsh or delayed shifting, failure to shift gears, reduced fuel efficiency, or the transmission being stuck in a single gear.

3. What causes the P2817 code to appear on a 2017 GMC Sierra?

Common causes include a faulty solenoid valve, transmission fluid contamination, wiring issues, or a malfunctioning transmission control module (TCM).

4. Can driving with the P2817 code damage my 2017 GMC Sierra?

Yes, driving with this code can lead to further transmission damage or unsafe driving conditions due to impaired shifting performance.

5. How do I diagnose the P2817 code on a 2017 GMC Sierra?

Diagnosis involves checking the transmission fluid level and condition, inspecting the wiring and connectors to the solenoid, and testing the solenoid's function with a scan tool.

6. How much does it cost to repair the P2817 code on a 2017 GMC Sierra?

Repair costs can vary but typically range from $150 to $400 for solenoid replacement. If wiring or TCM repairs are needed, costs may increase.

7. Can low or dirty transmission fluid cause the P2817 code on a 2017 GMC Sierra?

Yes, low or contaminated transmission fluid can cause solenoid issues, potentially triggering the P2817 code.

8. Is the Transmission Control Solenoid Valve 8 difficult to replace in a 2017 GMC Sierra?

Replacing the solenoid requires accessing the valve body, which can be labor-intensive. It’s recommended to have a professional handle the repair.

9. Will clearing the P2817 code fix the issue on my 2017 GMC Sierra?

Clearing the code without addressing the root cause is only a temporary fix. The issue will likely return if repairs are not made.

10. Do I need to reprogram the TCM after fixing the P2817 code on a 2017 GMC Sierra?

In some cases, the TCM may need to be reprogrammed or reset after replacing the solenoid or performing transmission repairs. Consult your vehicle’s manual or a professional mechanic.

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