AutoCodes – GMC – P2817 GMC

P2817 GMC 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 GMC 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 969
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
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Code P2817 GMC 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 GMC - Transmission Control Solenoid Valve 8 Stuck Off - AutoCodes.com
P2817 GMC Code - Transmission Control Solenoid Valve 8 Stuck Off

What are the Possible Causes of the DTC P2817 GMC?

  • 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 GMC?

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 GMC 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 GMC code?

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

Need Help with the Code?

Get the P2817 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

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 GMC Code

1. What are the common symptoms of OBDII code P2817 GMC?

The common symptoms of code P2817 GMC include transmission shifting issues, harsh shifting, decreased fuel efficiency, and the Check Engine Light illuminated on the dashboard.

2. What could cause OBDII code P2817 GMC to trigger?

Code P2817 GMC is typically triggered when the Transmission Control Solenoid Valve 8 is stuck in the off position, which can be caused by a faulty solenoid, wiring issues, or internal transmission problems.

3. How serious is OBDII code P2817 GMC?

Code P2817 GMC should be addressed promptly as it can lead to further transmission damage if left unresolved. It is recommended to diagnose and repair the issue as soon as possible.

4. Can I continue driving with OBDII code P2817 GMC present?

It is not recommended to continue driving with code P2817 GMC present, as it can cause further damage to the transmission and potentially result in unsafe driving conditions.

5. How can I diagnose OBDII code P2817 GMC?

Diagnosing code P2817 GMC typically involves using a scan tool to read the code, checking the transmission control solenoid valve 8, inspecting wiring connections, and performing a transmission fluid check.

6. What is the typical repair for OBDII code P2817 GMC?

The typical repair for code P2817 GMC involves replacing the Transmission Control Solenoid Valve 8 if it is found to be stuck off. Additionally, any wiring issues or internal transmission problems should be addressed.

7. Are there any DIY tips for fixing OBDII code P2817 GMC?

While some DIY enthusiasts may attempt to replace the Transmission Control Solenoid Valve 8 themselves, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is fully resolved.

8. How much does it cost to repair OBDII code P2817 GMC?

The cost of repairing code P2817 GMC can vary depending on the underlying cause, parts needed, and labor costs. It is advisable to get a few quotes from reputable mechanics to compare prices.

9. Can a faulty Transmission Control Solenoid Valve 8 be cleaned or repaired instead of replaced?

In some cases, a faulty Transmission Control Solenoid Valve 8 may be cleaned or repaired, but replacement is often the most effective solution to ensure proper function and prevent future issues.

10. Is OBDII code P2817 GMC specific to GMC vehicles only?

While the P2817 code is specific to GMC vehicles, similar codes related to transmission control solenoids may apply to other vehicle makes and models, each with their unique diagnostic procedures.

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