AutoCodes – GMC – P2817 2017 GMC Sierra

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

Quick Answer

The Transmission Control Module (TCM) uses the vehicle speed signal to determine the actual gear position (1st, 2nd, 3rd, 4th. Common causes include Faulty Transfer Case Shift Control Switch, Transfer Case Shift Control Switch harness is open or shorted, Transfer Case Shift Control Switch circuit poor electrical connection. 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 Faulty Transfer Case Shift Control Switch, Transfer Case Shift Control Switch harness is open or shorted, Transfer Case Shift Control Switch circuit poor electrical connection.
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 206

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 P2817 2017 GMC Sierra Description

The Transmission Control Module (TCM) uses the vehicle speed signal to determine the actual gear position (1st, 2nd, 3rd, 4th. 5th or 6th gear). The solenoid valve controls the flow of transmission fluid to the hydraulic valve that controls the system pressure in the transmission. Then the TCM compares the actual gear with the shift schedule in the TCM memory to detect shift solenoid valves and valve body mechanical problems.

OBDII Code P2817 2017 GMC Sierra - Transmission Control Solenoid Valve 8 Stuck Off - AutoCodes.com — P2817 2017 GMC Sierra Code - Transmission Control Solenoid Valve 8 Stuck Off

What does this mean?

What are the Possible Causes of the DTC P2817 2017 GMC Sierra?

Faulty Transfer Case Shift Control Switch
Transfer Case Shift Control Switch harness is open or shorted
Transfer Case Shift Control Switch circuit poor electrical connection

How to Fix the DTC P2817 2017 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 P2817 2017 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 P2817 2017 GMC Sierra code?

Need more information on how to fix the P2817 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 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. Itâ€™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 vehicleâ€™s manual or a professional mechanic.