AutoCodes – GMC – P2817 2016 GMC Sierra

P2817 2016 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 2016 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 178

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 2016 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 2016 GMC Sierra - Transmission Control Solenoid Valve 8 Stuck Off - AutoCodes.com — P2817 2016 GMC Sierra Code - Transmission Control Solenoid Valve 8 Stuck Off

What does this mean?

What are the Possible Causes of the DTC P2817 2016 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 2016 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 2016 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 2016 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 2016 GMC Sierra Code

1. What does the OBDII code P2817 mean for a 2016 GMC Sierra?

P2817 indicates that Transmission Control Solenoid Valve 8 is stuck in the "off" position, which affects the proper shifting of the transmission.

2. What are the common symptoms of a P2817 code in a 2016 GMC Sierra?

Symptoms may include erratic or hard shifting, failure to shift gears, transmission slipping, reduced fuel efficiency, and the check engine light turning on.

3. What causes the P2817 code to appear in a 2016 GMC Sierra?

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

4. Can driving with a P2817 code damage my 2016 GMC Sierra?

Yes, continuing to drive with this code can cause further damage to the transmission, leading to more expensive repairs if not addressed promptly.

5. How do I diagnose a P2817 code in my 2016 GMC Sierra?

Diagnosis typically involves scanning the vehicle with an OBDII scanner, inspecting the transmission fluid, checking the wiring and connectors, and testing the solenoid for proper operation.

6. How can I fix the P2817 code on my 2016 GMC Sierra?

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

7. How much does it cost to repair a P2817 code in a 2016 GMC Sierra?

The cost can vary, but replacing a solenoid typically costs $150-$400, while additional wiring or TCM repairs could increase the price.

8. Can low transmission fluid cause a P2817 code?

Yes, low or contaminated transmission fluid can lead to improper solenoid operation and trigger the P2817 code.

9. Do I need to replace the entire transmission to fix a P2817 code?

Not necessarily. In most cases, replacing the faulty solenoid or addressing the wiring and fluid issues will resolve the problem without needing a full transmission replacement.

10. Is a P2817 code specific to the 2016 GMC Sierra?

No, the P2817 code can appear in other vehicles as well, but the diagnosis and repair steps may vary depending on the make, model, and year.