AutoCodes – GMC – P2817 2014 GMC Sierra

P2817 2014 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 2014 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 176

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 2014 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 2014 GMC Sierra - Transmission Control Solenoid Valve 8 Stuck Off - AutoCodes.com — P2817 2014 GMC Sierra Code - Transmission Control Solenoid Valve 8 Stuck Off

What does this mean?

What are the Possible Causes of the DTC P2817 2014 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 2014 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 2014 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 2014 GMC Sierra 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 2014 GMC Sierra Code

1. What does the OBDII code P2817 mean on a 2014 GMC Sierra?

The P2817 code indicates that the Transmission Control Module (TCM) has detected that solenoid valve 8 in the transmission is stuck in the "off" position, preventing proper fluid flow and gear operation.

2. What are the common symptoms of the P2817 code in a 2014 GMC Sierra?

Symptoms include harsh or erratic shifting, transmission slipping, poor acceleration, reduced fuel efficiency, or the vehicle being stuck in a single gear.

3. What causes the P2817 code to appear in a 2014 GMC Sierra?

Common causes include a faulty transmission solenoid valve 8, dirty or low transmission fluid, internal transmission damage, wiring issues, or a malfunctioning TCM.

4. Can I drive my 2014 GMC Sierra with a P2817 code?

It is not recommended to drive the vehicle with this code, as it can lead to further transmission damage and unsafe driving conditions due to erratic shifting.

5. How can I fix the P2817 code on my 2014 GMC Sierra?

Repairs may include replacing or cleaning the transmission solenoid valve 8, flushing and replacing the transmission fluid, repairing damaged wiring, or reprogramming or replacing the TCM.

6. How much does it cost to repair the P2817 code on a 2014 GMC Sierra?

Costs vary, but replacing a transmission solenoid can range from $200 to $500, while more extensive transmission repairs can cost significantly more.

7. How can I diagnose the P2817 code in my 2014 GMC Sierra?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the transmission fluid for contamination, testing the solenoid for functionality, and checking the wiring and connectors.

8. Can low transmission fluid cause the P2817 code?

Yes, low or dirty transmission fluid can cause solenoid issues, leading to the P2817 code.

9. Does the P2817 code mean the entire transmission needs to be replaced?

Not necessarily. The code often points to a specific solenoid failure, which can often be repaired without replacing the entire transmission.

10. How can I prevent the P2817 code from recurring?

Regularly check and replace transmission fluid, address any transmission issues promptly, and ensure proper maintenance of electronic components like the TCM and wiring.