AutoCodes – GMC – P2817 2015 GMC Sierra

P2817 2015 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 2015 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 189

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 2015 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 2015 GMC Sierra - Transmission Control Solenoid Valve 8 Stuck Off - AutoCodes.com — P2817 2015 GMC Sierra Code - Transmission Control Solenoid Valve 8 Stuck Off

What does this mean?

What are the Possible Causes of the DTC P2817 2015 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 2015 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 2015 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 2015 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 2015 GMC Sierra Code

1. What does the OBDII code P2817 mean on a 2015 GMC Sierra?

P2817 indicates that the Transmission Control Module (TCM) has detected that solenoid valve 8 in the transmission is stuck in the "off" position and is not functioning as intended.

2. What are the common symptoms of a P2817 code on a 2015 GMC Sierra?

Symptoms may include difficulty shifting gears, erratic transmission behavior, transmission slipping, reduced fuel efficiency, and the illumination of the check engine light.

3. What causes the P2817 code to appear on a 2015 GMC Sierra?

Potential causes include a faulty transmission control solenoid, dirty or contaminated transmission fluid, wiring or connector issues in the transmission circuit, or a malfunctioning Transmission Control Module (TCM).

4. Can I continue driving my 2015 GMC Sierra with a P2817 code?

Itâ€™s not recommended to drive for long periods with a P2817 code, as it may cause further damage to the transmission and lead to unsafe driving conditions.

5. How is the P2817 code diagnosed on a 2015 GMC Sierra?

A technician typically uses an OBDII scanner to confirm the code, checks the transmission fluid condition, inspects the wiring and connectors, and may test the solenoid's operation using specialized diagnostic tools.

6. How do I fix the P2817 code on my 2015 GMC Sierra?

Repairs may include replacing the faulty solenoid, cleaning or replacing the transmission fluid, repairing damaged wiring, or reprogramming or replacing the TCM if necessary.

7. How much does it cost to repair the P2817 code on a 2015 GMC Sierra?

Repair costs can vary but generally range from $200 to $500 for solenoid replacement, with additional costs if the TCM or other components need repair or replacement.

8. Can dirty transmission fluid cause the P2817 code?

Yes, dirty or contaminated transmission fluid can lead to solenoid sticking or improper operation, which may trigger the P2817 code.

9. How can I prevent the P2817 code from occurring on my 2015 GMC Sierra?

Regular maintenance, including timely transmission fluid changes and inspections of the transmission system, can help prevent issues that may cause this code.

10. Is a P2817 code specific to GMC vehicles?

No, the P2817 code is a generic OBDII code that can appear on other vehicles, but the specific symptoms and repair procedures can vary depending on the make and model.